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Searching for ## Triangles and Their Parts

Learn in a way your textbook can't show you.

Explore the full path to learning Triangles and Their Parts

Geometry

You get to learn all about triangles, including the six different types–and some main components and unique properties of each type.

**Over 1,200 Lessons:** Get a Free Trial | Enroll Today

After completing this tutorial, you will be able to complete the following:

- Prove that the exterior angle measures of a triangle sum to 360 degrees.

Approximate Time | 2 Minutes |

Pre-requisite Concepts | Students should be familiar with exterior angle measures of a triangle, interior angle measures of a triangle, and sum of angle measures. |

Course | Geometry |

Type of Tutorial | Animation |

Key Vocabulary | exterior angle measures of a triangle, interior angle measures of a triangle, sum of angle measures |