5 Tutorials that teach Classifying Triangles by Angle
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Classifying Triangles by Angle

Classifying Triangles by Angle

Author: Graham Pardun
This lesson explains how the angles of a triangle can help classify it and what those triangles are.
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The Three Types of Triangles (Based on What Kinds of Angles They Have)

Here's an intro to right triangles, acute triangles, and obtuse triangles!