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# Exterior Angles Theorems

## Exterior angles equal the sum of the remote interiors.

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.

## Exterior Angles Theorems

This concept teaches students the sum of exterior angles for any polygon and the relationship between exterior angles and remote interior angles in a triangle.
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• PLIX

## Triangle Relationships

Exterior Angles Theorems Interactive
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## Exterior Angle Sum

Exterior Angles Theorems Interactive
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## Exterior Angles Theorems Principles

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

This video shows how to work step-by-step through one or more of the examples in Exterior Angles Theorems.
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## Exterior Angles Theorems Quiz

Ten question quiz. Students must solve for missing angles in triangles using the exterior angle theorem of triangles. Students need to use basic arithmetic and algebra skills to solve the problems.
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• Critical Thinking

## Exterior Angles Theorems Discussion Questions

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

## Exterior Angles Theorem

So...does our formula apply only to convex polygons? Or can we fix things up so that it applies to concave polygons also?
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• Study Guide