Define 'exterior angle' in your own words.

An exterior angle is formed when one side of a triangle is extended.

What does the exterior angle theorem state?

The measure of an exterior angle of a triangle is equal to the sum of the two remote interior angles.

A remote interior angle is an angle inside the triangle that is not adjacent to the exterior angle.

Name: Exterior Angle Theorem
Author: Insta~Lesson

8th Grade · Math · 45 min· Nc.8.g.5

I can apply the exterior angle theorem to solve problems involving missing angle measures in triangles.

1
The exterior angle theorem states that the measure of an exterior angle of a triangle is equal to the sum of the two remote interior angles.
2
An exterior angle is formed by extending one side of a triangle.
3
A remote interior angle is an angle inside the triangle that is not adjacent to the exterior angle.

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