Free videos to help you learn and understand concepts in Geometry. #Geometry

I introduce the ASA Postulate and the AAS Theorem for proving two triangles are congruent and work through 4 examples of including 2 column proofs.  EXAMPLES AT 0:50 7:19 9:45 13:38 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

OVERSEAS

Congruent Triangles ASA AAS Triangle Congruence

I introduce Inequalities in 1 Triangle in which we look at how the lengths of the sides are related to the size of the angles that are opposite those sides.  EXAMPLES AT 2:34 6:04 9:55 11:43 14:25 15:30
At minute 2:07 I misspoke, 20+30 is 50 of course:D Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Triangle Inequality Theorem

I introduce the structure of 2 column proofs and then remind you of the Properties of Equality you learned in Algebra.  I finish by working through three examples.
EXAMPLES at 13:10 17:09 23:43

Check out http://www.ProfRobBob.com/, there you will find my lessons organized by class/subject and then by topics within each class. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Intro to 2 Column Geometry Proofs

I introduce the properties of Rhombuses, Rectangles, and Squares and finish by working through five examples to help you through your homework.
Rhombus examples 5:39   Rectangle examples 14:05 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Rhombuses, Rectangles, and Squares

I introduce the distance formula and show it's relationship to the Pythagorean Theorem.  This video includes three examples of finding the distance between two points.
EXAMPLES at 2:54 14:21 17:41
Pythagorean Theorem 4 Examples w/ Fractions & Radicals 
   • Pythagorean Theorem 4 Examples w/ Fra...  
Pythagorean Theorem 3 Algebraic Examples 
   • Pythagorean Theorem 3 Algebraic Examples   Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Distance Formula & Pythagorean Theorem 3 Examples

I introduce the Angle Bisector Theorem and prove it, introduce the Converse of the Angle Bisector Theorem, and finish by working through two examples.  EXAMPLES AT 0:20 9:40 15:19 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Angle Bisector Theorem

I work through 5 examples of solving for missing sides of similar polygons.  Similar polygons have linear sides, the corresponding angles are congruent, and the corresponding sides are proportional.  The equal proportions, or constant ratios of the side lengths, are called the Scale Factor.  EXAMPLES at 3:15 6:46 12:17 15:21 17:34 22:24 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Proportions and Similar Polygons / Similar Figures

In this lesson I start by setting up the example with you.  Then at 15:08 I show you how to find the Point of Tangency when given the equation of the tangent line and a circle.  In the first solution I work through the slope formula using the fact that the tangent line and radius are perpendicular.  The second method starting at 26:00 I just use straight substitution to solve the system of equations between the tangent line and the circle.

Check out www.ProfRobBob.com, there you will find my lessons organized by class/subject and then by topics within each class. Find free review test, useful notes and more at http://www.mathplane.com/
If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Given a Tangent Line & Circle Find the Point of Tangency

I introduce Concurrency of Angle Bisectors in Triangles and discuss how they meet at the center of the inscribed circle.  EXAMPLES AT 2:23 6:28 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Triangle Angle Bisectors & Incenter

I define congruent polygons and prove the Third Angle Theorem.  EXAMPLES AT 4:28 10:40 16:24 22:25 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Congruent Polygons & Third Angle Theorem

An introduction to finding the equations of lines that pass through a point and are parallel or perpendicular to a given line.
Please check out my other lessons about Linear Functions:
Graphing Lines in Slope-Intercept form y=mx+b
   • Graphing Lines in Slope-Intercept for...  
Standard Form of a Line
   • Standard Form of a Line  
Graphing lines using X & Y Intercepts
   • Graphing lines using X & Y Intercepts  
Slope and Equations of Lines 
   • Rate of Change Slope & Point Slope Eq...  
Equations of Lines and Graphing
   • Equations of Lines and Graphing  
Regression Lines and Correlation with TI-84
   • Regression Lines and Correlation with...  
Linear Functions, their Attributes, & Interpreting Slope and y-Intercept 
   • Linear Functions, their Attributes, &...  

Check out www.ProfRobBob.com, there you will find my lessons organized by class/subject and then by topics within each class. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Equations of Parallel and Perpendicular Lines

I introduce the AA Postulate and the SAS & SSS to show you how to prove two triangles are similar.  This video includes about  5 examples.
The last word in the definition of SAS for similar triangles should be similar, not congruent.

Check out http://www.ProfRobBob.com/, there you will find my lessons organized by class/subject and then by topics within each class. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Proving Triangles are Similar AA SAS SSS

I introduce deductive reasoning by introducing the structure of "if, then" statements.  I explain conditional statements, converse statements, bi-conditional statements, inverse statements, and finally contrapositive statements. Find free review test, useful notes and more at http://www.mathplane.com/

A big thanks to Jake Stuart for adding the Closed Captions for this video!  BAM:D If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Deductive Reasoning If Then Statements

I introduce the basic geometric figures of segments, rays, and distance on a number line.  This lecture includes discussions about the Ruler Postulate, Segment Addition Postulate, Congruency is defined, Midpoint of a Segment, and finally Bisector of a Segment. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Segment, Ray, Distance on a Number Line

I introduce the properties of angles that are formed when 2 parallel lines are intersected by a transversal.  These angles include Corresponding, Alternate Interior, Alternate Exterior, and Same-Side Interior angles.  I finish with 5 examples, the last of which is a proof involving parallel lines.  EXAMPLES at 2:00 6:06 11:13 14:10 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Parallel Lines & Transversal Angles

I introduce the concept of Chords in a circle and then give you 7 theorems that explain the relationships of chords, arcs, diameters, and central angles is circles. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Chords Arcs and Diameters in Circle

I explain how the Pythagorean Theorem allows you to find the length of an unknown side of a right triangle.  Examples start at 3:01 6:05 9:14 11:34
Distance Formula & Pythagorean Theorem 3 Examples 
   • Distance Formula & Pythagorean Theore...  
Here is a link to more Pythagorean theorem examples that require more complex algebra work.     • Pythagorean Theorem 3 Algebraic Examples  

Check out http://www.ProfRobBob.com/, there you will find my lessons organized by class/subject and then by topics within each class. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Pythagorean Theorem 4 Examples w/ Fractions & Radicals

I introduce many properties of Kites, work through three examples of finding missing angles, and finish with a quick two column proof.  EXAMPLES 5:55 10:09 12:54 14:46 Find free review test, useful notes and more at http://www.mathplane.com/

A HUGE THANK YOU  sent out to kariheedots for Close Captioning this math lesson.  Your help is appreciated very much:) If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Properties of Kites

I introduce the Side Splitter Theorem for triangles and its corollary that applies to parallel lines intsecting multiple transversals.  I work through two algebra examples involving proportions.
EXAMPLES at 1:34 6:23 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Side Splitter Theorem Proportions in Triangles

I introduce 2 more theorems that can verify that 2 lines are parallel.  Each of these two theorems are proven with 2 column proofs.  EXAMPLES at 0:04 7:54 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Parallel & Perpendicular Lines Proof

I introduce how to find segment lengths in circles that are created by the intersection of Chords, Secants, and Tangent lines.  I finish by working through 3 examples to help your understanding. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Segment Lengths in Circles with Chords, Secants, and Tangents

I introduce and work through many examples involving the Triangle Midsegment Theorem.  When a segment connects the midpoints of two sides of a triangle, that midsegment is half the length of the third side and also parallel to that third side.  EXAMPLES AT 1:05 10:42 13:55 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Triangle Midsegment Theorem

Link to Part 1    • Right Triangle Trigonometry Part 1: F...  
I introduce evaluating trigonometric functions about a right triangle.  We will set up the trig ratios given a right triangle, and find missing angle measures, and sides of right triangles using the pythagorean theorm and the trig functions.

Check out http://www.ProfRobBob.com/, there you will find my lessons organized by class/subject and then by topics within each class. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Right Triangle Trigonometry Part 2: Solving for Acute Angles

Continued discussion about equations of lines and the three equation forms.  Graphing of linear functions also included.  I graph vertical and horizontal lines, lines from Slope Intercept form, and lines in Standard From using x and y intercepts.
Please check out my other lessons about Linear Functions:
Graphing Lines in Slope-Intercept form y=mx+b
   • Graphing Lines in Slope-Intercept for...  
Standard Form of a Line
   • Standard Form of a Line  
Graphing lines using X & Y Intercepts
   • Graphing lines using X & Y Intercepts  
Slope and Equations of Lines 
   • Rate of Change Slope & Point Slope Eq...  
Equations of parallel and perpendicular lines
   • Equations of Parallel and Perpendicul...  
Regression Lines and Correlation with TI-84
   • Regression Lines and Correlation with...  
Linear Functions, their Attributes, & Interpreting Slope and y-Intercept 
   • Linear Functions, their Attributes, &...  

Check out www.ProfRobBob.com, there you will find my lessons organized by class/subject and then by topics within each class. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Equations of Lines and Graphing

I introduce the Perpendicular Bisector Theorem in triangles.  We discuss how the point of concurrency is the center of the circumcenter.  The circumcenter is the center of the circle that circumscribed the triangle.  I finish by working through two examples of finding the circumcenter of a triangle given its three vertices.  ***NOTE: In the final example, m is used for both midpoint and slope. mp should be used for midpoint and m for slope.
EXAMPLES AT 3:56 9:36 13:47 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Triangle Perpendicular Bisectors & Circumcenter

I introduce the Side-Side-Side Postulate and Side-Angle-Side Postulate and work through 4 2 column proofs showing you how these can prove 2 triangles are congruent.  EXAMPLES AT 0:55 6:04 11:39 14:42 16:43

Proving two triangles are congruent using the Angle-Side-Angle Postulate or ASA and the Angle-Angle-Side Postulate or AAS here    • Congruent Triangles ASA AAS Triangle ...  

Check out http://www.ProfRobBob.com/, there you will find my lessons organized by class/subject and then by topics within each class. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Congruent Triangles SSS SAS

I introduce how to find angle measures and arc measures in circles created by Secants, Chords, and Tangents that intersect inside or outside of a circle.  I work through three multiple part examples to help you in your understanding of how to work these problems.

Check out http://www.ProfRobBob.com/, there you will find my lessons organized by class/subject and then by topics within each class. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Angles in Circles Chords Secants Tangents and Arcs

I introduce the Hinge Theorem which allows us to look at the size relationship between the angles and sides within multiple triangles.  I work through many examples in this video.  EXAMPLES AT 1:40 2:28 3:30 4:48 5:32 8:52 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Hinge Theorem Inequalities 2 Triangles

I introduce how to set up Ratios and Proportions and then work through a number of examples. EXAMPLES start at 1:34 and 6:28 and 14:44 and 23:29

Check out http://www.ProfRobBob.com/, there you will find my lessons organized by class/subject and then by topics within each class. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Ratios and Proportions

I introduce tangent lines and work through 6 examples to help explain how they relate to circles.  Examples at 6:00 7:41 10:18 15:56 18:43 12:31

Check out http://www.ProfRobBob.com/, there you will find my lessons organized by class/subject and then by topics within each class. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Tangent Lines to Circles

I work through four examples of finding Sector Area and Segment Area of circles.
EXAMPLES at 2:03 6:16 15:23 23:34 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Sector and Segment Area in Circles

I introduce the theorem that state the interior sum of the angles of a triangle add up to 180 degrees and show how this is true with parallel lines.  The second theorem I cover explains how an exterior angle of a triangle is equal to the sum of the 2 interior remote angles.
EXAMPLES at 6:34 9:00 14:46 19:43 23:32 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Angles of Triangles and Parallel Lines

Using the midpoint, slope, and distance formulas I prove the Midsegment Theorem which states a segment that connect the midpoints of 2 sides of a triangle is parallel and half the length of the third side. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Proving Midsegment Theorem

I introduce Polygon Angle Sum Theorems, not Polynomial Angle Sum Theorem which isn't even a theorem!  This includes finding the Sum of the Interior Angles of a Polygon and the Sum of the Exterior Angles.  I also talk about finding the individual interior and exterior angles of Regular Polygons...after I define what a Regular Polygon is:)  EXAMPLES AT 3:30 4:29 5:38 7:00 10:40 14:18 15:22 17:26
I do not know why I wrote Polynomial Angle Sum Theorem???!!!  Too many hours working between teaching and YouTube I guess. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Polygon Angle Sum Theorems

I introduce Properties of Trapezoids and the Mid-segment Theorem
EXAMPLES AT 3:56 7:54 13:20 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Properties of Trapezoids & Mid Segment Theorem

We work with the converse of the theorems we learned in the last video to prove, or make sure, that quadrilaterals are parallelogram.  I work through two algebraic examples and one two column proof.  EXAMPLES AT 2:33 8:43 12:22 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Proving Quadrilaterals are Parallelograms

I introduce the formulas to find the area of Parallelograms and Triangles.  I then work through 6 examples of increasing levels of difficulty.
EXAMPLES at 5:50 8:27 9:45 16:38 20:32 25:42 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Area Parallelograms and Triangles 6 Examples

When you drop an altitude from the right angle of a right triangle you get three triangles that are all similar to each other.  I explain this and finish by working through three examples in this video.
EXAMPLES at 5:26 9:33 17:06 23:15 28:08 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Similarity in Right Triangles

I introduce the Properties of Parallelograms...the opposite sides are equal, the opposite angles are equal, the consecutive angles are supplementary, and the diagonals bisect each other.  I work through four algebraic examples in this video at 4:28 14:30 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Properties of Parallelograms

I define and show you how to identify Skew and Parallel lines in a drawing.  I then discuss the types of angles you have when 2 or more lines are cut by a transversal. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Parallel Lines & Skew Lines, Angles formed by a Transversal

I introduce the basic structure of angles in Geometry, how to name them based on points, and size such as acute and obtuse.  I also introduce the Protractor Postulate, Angle addition Postulate, define congruent angles, angle bisector, and adjacent angles.
EXAMPLES at 12:20 18:30 22:58 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Introduction to Angles

I define Inscribed Angles, Inscribed Angles involving Tangent Lines, and 3 Corollaries of Inscribed Angles.  I work through five examples to help your understanding. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Inscribed Angles in Circles and Tangent Lines

I introduce 5 more postulates relating to points, lines, and planes.  These postulates are then used to prove the first three theorems in Geometry.  Theorem 1, If 2 lines intersect, then they intersect in exactly one point.  Theorem 2, Through a line and a point not in the line there is exactly one plane.  Theorem 3, If 2 lines intersect, then exactly 1 plane contains the lines.
EXAMPLES at 5:41 12:35 19:50

Check out http://www.ProfRobBob.com/, there you will find my lessons organized by class/subject and then by topics within each class. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Special Right Triangles 45-45-90 30-60-90

I introduce the Perpendicular Bisector Theorem and the Converse Theorem and prove both.  I finish by working through three examples.  EXAMPLES AT 0:34 11:55 14:38 20:15 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Perpendicular Bisector Theorem

I introduce evaluating trigonometric functions about a right triangle.  We will set up the trig ratios given a right triangle, and find missing angle measures, and sides of right triangles using the pythagorean theorm and the trig functions.

Check out http://www.ProfRobBob.com/, there you will find my lessons organized by class/subject and then by topics within each class.
 Find free review test, useful notes and more at http://www.mathplane.com/ 
If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Right Triangle Trigonometry Part 1: Finding Missing Sides

I introduce many basic definitions that are related to circles and also the area and circumference formula.  I then work through many examples examples of naming minor and major arcs, central angle, and finding arc lengths.
EXAMPLES at 9:55 19:50 21:10 25:38 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Circle Intro and Arc Length

I introduce altitudes in triangles and point of concurrency, the orthocenter.  I finish by working through two examples, the last of which finding the orthocenter given the three vertices of a triangle.  EXAMPLES AT 7:10 10:31 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Altitudes of Triangles and Orthocenter

I introduce Points, Lines, and Planes along with many definitions like collinear and coplanar points to begin our studies of Geometry.  Parts D and E of the last example should read is there a plane in the solid that contains these 3 vertices, not if they are coplanar.  Asking if they are coplanar is the same type of error I corrected early in the video.  Three points define a plane.  
EXAMPLES at 16:35

Check out http://www.ProfRobBob.com/, there you will find my lessons organized by class/subject and then by topics within each class. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Points Lines & Planes in Geometry

I introduce the Hypotenuse Leg Theorem or HL and prove it in a 2 column proof.  I also work through three examples using this theorem.EXAMPLES AT  11:10 13:00 14:20 
Second Version of Proof at 21:03 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Congruent Right Triangles HL Hypotenuse Leg Theorem

We take another look at parallel lines being cut by a transversal.  I work through two examples where we are proving the lines that were cut by a transversal are parallel.
EXAMPLES at 4:51 13:04 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Proving Lines Parallel

Introduction to finding slope and graphing lines.

Please check out my other lessons about Linear Functions:
Graphing Lines in Slope-Intercept form y=mx+b
   • Graphing Lines in Slope-Intercept for...  
Graphing lines using X & Y Intercepts
   • Graphing lines using X & Y Intercepts  
Standard Form of a Line
   • Standard Form of a Line  
Equations of Lines and Graphing
   • Equations of Lines and Graphing  
Equations of parallel and perpendicular lines
   • Equations of Parallel and Perpendicul...  
Regression Lines and Correlation with TI-84
   • Regression Lines and Correlation with...  
Linear Functions, their Attributes, & Interpreting Slope and y-Intercept 
   • Linear Functions, their Attributes, &...  

Check out www.ProfRobBob.com, there you will find my lessons organized by class/subject and then by topics within each class. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Rate of Change Slope & Point Slope Equation of Lines

I introduce the midpoint formula and work thought three examples to your understanding.  The first two examples are finding a midpoint, the second involves fractions.  The last example shows you how to find an unknown endpoint when you know the midpoint and one endpoint of the segment.
EXAMPLES at 2:21 9:22 15:00 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Midpoint Formula

EXAMPLES start at 9:27
I introduce Adjacent Angles, Vertical Angles, Supplementary Angles, Linear Pair, and Complementary Angles in Geometry. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Special Angle Pairs

I introduce how to graph a line in slope intercept form.  I also discuss graphing vertical and horizontal lines.

Please check out my other lessons about Linear Functions:
Solving Linear Systems by Graphing 3 Examples
   • Solving Linear Systems by Graphing 3 ...  
Standard Form of a Line
   • Standard Form of a Line  
Graphing Lines with x-Intercepts and y-Intercepts
   • Graphing lines using X & Y Intercepts  
Slope and Equations of Lines 
   • Rate of Change Slope & Point Slope Eq...  
Equations of Lines and Graphing
   • Equations of Lines and Graphing  
Equations of parallel and perpendicular lines
   • Equations of Parallel and Perpendicul...  
Linear Functions, their Attributes, & Interpreting Slope and y-Intercept 
   • Linear Functions, their Attributes, &...  


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Thank you Pigere Nicolas for the French Closed Captions.  BAM!!! Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Graphing Lines in Slope-Intercept form y=mx+b

I introduce Medians in Triangles and their point of concurrency...the centroid.  I finish by working through three example dealing with the centroid and the ratio of the median segments.  EXAMPLES AT 5:43 7:47 12:48 Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob  

Triangle Inequality Theorem

シリーズ

Geometry #31

説明

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