Education Technology

Geometry: Exterior & Remote Interior Angles

by Texas Instruments

Overview

Students investigate an exterior angle and its two remote interior angles.

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Key Steps

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    Students are given a triangle with the interior angle measures. First they will construct and find the measure of an exterior angle of a triangle. When they drag a vertex of the triangle, students will record the measurements of the exterior angle and the two remote interior angles. They will discover the corollary to the Triangle Exterior Angle Theorem.