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NYS

These are the resources that support this NYS Standard.

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 88 resources.
Title Description Thumbnail Image Curriculum Topics

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

Parallel Lines Cut by a Transversal 1

This is part of a series of animated math clip art images that show show the properties of angles. This collection also investigates the types of angles that can be found in triangles and quadrilaterals.

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

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

Parallel Lines Cut by a Transversal 2

This is part of a series of animated math clip art images that show show the properties of angles. This collection also investigates the types of angles that can be found in triangles and quadrilaterals.

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

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

Parallel Lines Cut by a Transversal 3

This is part of a series of animated math clip art images that show show the properties of angles. This collection also investigates the types of angles that can be found in triangles and quadrilaterals.

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

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

Parallel Lines Cut by a Transversal 4

This is part of a series of animated math clip art images that show show the properties of angles. This collection also investigates the types of angles that can be found in triangles and quadrilaterals.

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

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

Parallel Lines Cut by a Transversal 5

This is part of a series of animated math clip art images that show show the properties of angles. This collection also investigates the types of angles that can be found in triangles and quadrilaterals.

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

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

Parallel Lines Cut by a Transversal 6

This is part of a series of animated math clip art images that show show the properties of angles. This collection also investigates the types of angles that can be found in triangles and quadrilaterals.

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

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

Parallel Lines Cut by a Transversal 7

This is part of a series of animated math clip art images that show show the properties of angles. This collection also investigates the types of angles that can be found in triangles and quadrilaterals.

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

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

Parallel Lines Cut by a Transversal 8

This is part of a series of animated math clip art images that show show the properties of angles. This collection also investigates the types of angles that can be found in triangles and quadrilaterals.

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

Collections in a Box Geometric Constructions with Points and Lines, Parallel Lines, Perpendicular Lines

Definition--Theorems and Postulates--Exterior Angle Theorem

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

Note: The download is a PNG file.

Related Resources

To see additional resources on this topic, click on the Related Resources tab.

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Definition--Theorems and Postulates--Exterior Angle Theorem Definition of a Triangle

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

In this activity, learn about the geometry of city planning. We explore why many cities in the US and around the world are laid out in a rectangular grid made up of parallel and perpendicular lines. This companion to a Google Earth Voyager Story provides a deeper understanding of the geometric concepts introduced.

Note: The download is the Teacher's Guide in PDF format. 

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

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

In this activity, learn about the geometry of city planning. We explore why many cities in the US and around the world are laid out in a rectangular grid made up of parallel and perpendicular lines. This companion to a Google Earth Voyager Story provides a deeper understanding of the geometric concepts introduced.

Google Earth Voyager Story: The Geometry of City Planning, Part 2 Perpendicular Lines, Parallel Lines, Applications of Points and Lines

Math Clip Art--Angle Illustrations--Adjacent Angles--Labeled

This is part of a collection of clip art images showing different types of angles.

Math Clip Art--Adjacent Angles--Labeled Angles, Applications of Angles and Planes

Math Clip Art--Angle Illustrations--Adjacent Angles--Unlabeled

This is part of a collection of clip art images showing different types of angles.

Math Clip Art--Adjacent Angles--Unlabeled Angles, Applications of Angles and Planes

Math Clip Art--Angle Illustrations--Complementary Angles--Labeled

This is part of a collection of clip art images showing different types of angles.

Math Clip Art--Complementary Angles--Labeled Angles, Applications of Angles and Planes

Math Clip Art--Angle Illustrations--Complementary Angles--Unlabeled

This is part of a collection of clip art images showing different types of angles.

Math Clip Art--Complementary Angles--Unlabeled Angles, Applications of Angles and Planes

Math Clip Art--Angle Illustrations--Supplementary Angles--Labeled

This is part of a collection of clip art images showing different types of angles.

Math Clip Art--Supplementary Angles--Labeled Angles, Applications of Angles and Planes

Math Clip Art--Angle Illustrations--Supplementary Angles--Unlabeled

This is part of a collection of clip art images showing different types of angles.

Math Clip Art--Supplementary Angles--Unlabeled Angles, Applications of Angles and Planes

Math Clip Art--Angle Illustrations--Vertical Angles--Labeled

This is part of a collection of clip art images showing different types of angles.

Math Clip Art--Vertical Angles--Labeled Angles, Applications of Angles and Planes

Math Clip Art--Angle Illustrations--Vertical Angles--Unlabeled

This is part of a collection of clip art images showing different types of angles.

Math Clip Art--Vertical Angles--Unlabeled Angles, Applications of Angles and Planes

Math Clip Art: Parallel Lines Cut by a Transversal 1

Math Clip Art: Parallel Lines Cut by a Transversal, Image 1 Parallel Lines

Math Clip Art: Parallel Lines Cut by a Transversal 10

This collection of clip art images show the various angles formed by two parallel lines cut by a transversal. This includes alternate interior angles, alternate exterior angles, corresponding angles, vertical angles, supplementary angles, same side interior angles, and same side exterior angles.

Math Clip Art: Parallel Lines Cut by a Transversal, Image 10 Parallel Lines

Math Clip Art: Parallel Lines Cut by a Transversal 11

This collection of clip art images show the various angles formed by two parallel lines cut by a transversal. This includes alternate interior angles, alternate exterior angles, corresponding angles, vertical angles, supplementary angles, same side interior angles, and same side exterior angles.

Math Clip Art: Parallel Lines Cut by a Transversal, Image 11 Parallel Lines

Math Clip Art: Parallel Lines Cut by a Transversal 12

This collection of clip art images show the various angles formed by two parallel lines cut by a transversal. This includes alternate interior angles, alternate exterior angles, corresponding angles, vertical angles, supplementary angles, same side interior angles, and same side exterior angles.

Math Clip Art: Parallel Lines Cut by a Transversal, Image 12 Parallel Lines

Math Clip Art: Parallel Lines Cut by a Transversal 13

This collection of clip art images show the various angles formed by two parallel lines cut by a transversal. This includes alternate interior angles, alternate exterior angles, corresponding angles, vertical angles, supplementary angles, same side interior angles, and same side exterior angles.

Math Clip Art: Parallel Lines Cut by a Transversal, Image 13 Parallel Lines

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