## NY-8.G.5: Use informal arguments to establish facts about the angle sum and exterior angle of triangles, about the angles created when parallel lines are cut by a transversal, and the angle-angle criterion for similarity of triangles. For example, arrange three copies of the same triangle so that the sum of the three angles appears to form a line, and give an argument in terms of transversals why this is so.

There are 106 resources.
Title Description Thumbnail Image Curriculum Topics

## Interactive Media Collection: Parallel Lines

This collection aggregates all the math videos and other resources on the topic of Parallel Lines. There are 13 resources.  Point-Slope Form, Slope-Intercept Form, Parallel Lines, Slope, Definition of a Quadrilateral and Perpendicular Lines

## Animated Math Clip Art Collection: Parallel Lines

This collection aggregates all the animated math clip art around the topic of Parallel Lines Cut by a Transversal. There are a total of 8 images. This collection of resources is made up of downloadable GIF files that you can easily incorporate into a presentation. Parallel Lines

## Google Earth Voyager Collection

This collection aggregates all the Google Earth Voyager Stories. There are a total of 17 stories. Perpendicular Lines, Parallel Lines, Applications of Points and Lines, Applications of Circles, Cylinders, Applications of Angles and Planes, Applications of Polygons, Pyramids, Triangular Prisms, Rectangular Prisms, 3-Dimensional Figures, Applications of Surface Area and Volume, Rational Functions and Equations, Surface Area, Volume, Applications of Triangles and Applications of Quadrilaterals

## Math Examples Collection: Equations Using the Exterior Angle Theorem

This collection aggregates all the math examples around the topic of Equations Using the Exterior Angle Theorem. There are a total of 10 Math Examples. This collection of resources is made up of downloadable PNG images that you can easily incorporate into your lesson plans. Applications of Triangles

## Math Definitions Collection: Geometry Theorems and Postulates

This collection aggregates all the definition image cards around the topic of Theorems and Postulates terms and vocabulary. There are a total of 18 terms. Definition of a Triangle, Definition of an Angle, Right Triangles and Definition of a Line

## Test Prep Interactive Quiz

Test Prep Interactive Quiz | Word Problems (Sums to 20)

This is part of a collection of self-scoring interactive math quizzes on a variety of topics.

Addition Facts to 25

## Test Prep Interactive Quizzes

Test Prep Interactive Quizzes are an excellent way for students to review key concepts. Each Test Prep quiz has ten multiple choice questions.
Addition Facts to 10, Addition Facts to 25, Addition Facts to 100, Place Value, Subtraction Facts to 100, Definition of an Angle, Solving One-Step Equations, Graphs of Linear Functions, Slope, Slope-Intercept Form and Counting

## Math Examples Collection: Equations with Angles from Parallel Lines Cut by a Transversal

This collection aggregates all the math examples around the topic of Equations with Angles from Parallel Lines Cut by a Transversal. There are a total of 10 images. Parallel Lines, Applications of Angles and Planes and Applications of Equations and Inequalities

## Math Clip Art Collection: Points, Lines, Segments, and Rays

This collection aggregates all the math clip art around the topic of Points, Lines, Segments, and Rays. There are a total of 18 images. Applications of Points and Lines, Parallel Lines, Perpendicular Lines, Applications of Coordinate Geometry and Coordinate Systems

## Math Clip Art Collection: Parallel Lines Cut by a Transversal

This collection aggregates all the math clip art around the topic of Parallel Lines Cut by a Transversal. There are a total of 16 images. Parallel Lines

## Math Clip Art Collection: Angles

OverviewThis collection aggregates all the math clip art around the topic of Angles. There are a total of 22 images. Angles and Applications of Angles and Planes

## Math Examples Collection: Equations with Angle Measures

This collection aggregates all the math examples around the topic of Solving Equations with Angle Measures. There are a total of 25 Math Examples. Solving Multistep Equations, Applications of Angles and Planes, Applications of Quadrilaterals, Applications of Equations and Inequalities and Definition of an Angle

## Animated Math Clip Art--Parallel Lines Cut by a Transversal 1

Animated Math Clip Art--Parallel Lines Cut by a Transversal 1

Topic

Parallel Lines

Parallel Lines

## Animated Math Clip Art--Parallel Lines Cut by a Transversal 2

Animated Math Clip Art--Parallel Lines Cut by a Transversal 2

Topic

Parallel Lines

Parallel Lines

## Animated Math Clip Art--Parallel Lines Cut by a Transversal 3

Animated Math Clip Art--Parallel Lines Cut by a Transversal 3

Topic

Parallel Lines

Parallel Lines

## Animated Math Clip Art--Parallel Lines Cut by a Transversal 4

Animated Math Clip Art--Parallel Lines Cut by a Transversal 4

Topic

Parallel Lines

Parallel Lines

## Animated Math Clip Art--Parallel Lines Cut by a Transversal 5

Animated Math Clip Art--Parallel Lines Cut by a Transversal 5

Topic

Parallel Lines

Parallel Lines

## Animated Math Clip Art--Parallel Lines Cut by a Transversal 6

Animated Math Clip Art--Parallel Lines Cut by a Transversal 6

Topic

Parallel Lines

Parallel Lines

## Animated Math Clip Art--Parallel Lines Cut by a Transversal 7

Animated Math Clip Art--Parallel Lines Cut by a Transversal 7

Topic

Parallel Lines

Parallel Lines

## Animated Math Clip Art--Parallel Lines Cut by a Transversal 8

Animated Math Clip Art--Parallel Lines Cut by a Transversal 8

Topic

Parallel Lines

Parallel Lines

## Collections in a Box: Parallel and Perpendicular Lines

This cheat sheet gathers together the resources on the topic of parallel and perpendicular lines. See the descriptions and links below. Each link takes you to a collection of resources around that topic. The middle column indicates the number of resources available and the third column takes you to page on Media4Math where those resources can be found.

Geometric Constructions with Points and Lines, Parallel Lines and Perpendicular Lines

## Definition--Theorems and Postulates--Exterior Angle Theorem

Definition--Theorems and Postulates--Exterior Angle Theorem

This is part of a collection of definitions of geometric theorems and postulates.

Definition of a Triangle

## Google Earth Voyager Story: The Geometry of City Planning, Part 1

Google Earth Voyager Story: The Geometry of City Planning, Part 1

Topic

Geometric Models

Perpendicular Lines and Parallel Lines

## Google Earth Voyager Story: The Geometry of City Planning, Part 2

Google Earth Voyager Story: The Geometry of City Planning, Part 2

Topic

Geometric Models

Perpendicular Lines, Parallel Lines and Applications of Points and Lines

## INSTRUCTIONAL RESOURCE: Math Examples 43

INSTRUCTIONAL RESOURCE: Math Examples--Quadrilateral Classification

This set of tutorials provides 34 examples of the types of quadrilaterals and how to classify quadrilaterals based on the sides and angles.

Definition of a Quadrilateral