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8.7: Triangle Sum Theorem

Difficulty Level: At Grade Created by: CK-12
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Vocabulary

Exterior angles

An exterior angle is the angle formed by one side of a polygon and the extension of the adjacent side.

Interior angles

Interior angles are the angles inside a figure.

Triangle

A triangle is a polygon with three sides and three angles.

Triangle Sum Theorem

The Triangle Sum Theorem states that the three interior angles of any triangle add up to 180 degrees.

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Difficulty Level:
At Grade
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Date Created:
Dec 02, 2015
Last Modified:
Sep 08, 2016
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MAT.GEO.312.L.3
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