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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

by CK-12 //basic
Apply the Exterior Angles Theorems.
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• Video

Exterior Angles Theorems Principles - Basic

by CK-12 //basic
This video provides the student with a walkthrough on exterior angle theorems.
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Exterior Angles Theorems Examples - Basic

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

Introduction to the Exterior Angles of a Triangle

by CK-12 //basic
Definitions and theorems involving the exterior angles of a triangle.
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• Video

Proof that the Sum of the Exterior Angles of a Triangle is 360 Degrees

by CK-12 //basic
Provides a two column proof that the sum of the exterior angles of a triangle is 360 degrees.
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• Video

Proof of the Exterior Angles Theorem

by CK-12 //basic
Provides a two column proof of the exterior angles theorem.
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