# Alternate Exterior Angles

## Angles on opposite sides of a transversal, but outside the lines it intersects.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Alternate Exterior Angles

by CK-12 //basic
Use alternate exterior angles to determine congruency and the presence of parallel lines.
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## Alternate Exterior Angles

This concept introduces students to alternate exterior angles and how to use them to determine whether or not lines are parallel.
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## Alternate Exterior Angles

This concept introduces students to alternate exterior angles and how to use them to determine whether or not lines are parallel.
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## Alternate Exterior Angles

Use alternate exterior angles to determine congruency and the presence of parallel lines.
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## Alternate Exterior Angles

by Susan Sudberry //basic
Use alternate exterior angles to determine congruency and the presence of parallel lines.
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## Alternate Exterior Angles

by Kisha Barnes //basic
Use alternate exterior angles to determine congruency and the presence of parallel lines.
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• PLIX

## Alternate Exterior Angles

Alternate Exterior Angles Interactive
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• Video

## Alternate Exterior Angles Principles - Basic

by CK-12 //basic
This video provides the student with a walkthrough on alternate exterior angles.
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## Alternate Exterior Angles Examples - Basic

by CK-12 //basic
This video provides the student with a walkthrough of one or more examples from the concept "Alternate Exterior Angles".
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• Video

## Alternate Exterior Angles Principles

This video gives more detail about the mathematical principles presented in Alternate Exterior Angles.
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## Alternate Exterior Angles Examples

This video shows how to work step-by-step through one or more of the examples in Alternate Exterior Angles.
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• Video

## Angles and Transversals

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## Proof: Alternate Exterior Angles Converse

by CK-12 //basic
Take a look at this proof that shows the alternate interior angles converse.
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• Critical Thinking

## Alternate Exterior Angles Discussion Questions

A list of student-submitted discussion questions for Alternate Exterior Angles.
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• Real World Application

## Alternate Exterior Angles

What if you were asked to design your own city? How would you use alternate exterior angles, same side interior angles, and perpendicular lines to design your city?
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• Study Guide