Exterior Angle Theorem Flashcard

Front

What is the Exterior Angle Theorem?

Back

The Exterior Angle Theorem states that the measure of an exterior angle of a triangle is equal to the sum of the measures of the two remote interior angles.

Front

What are remote interior angles?

Back

Remote interior angles are the two angles inside a triangle that are not adjacent to a given exterior angle.

Front

If one exterior angle measures 91°, what is the sum of the remote interior angles?

Back

The sum of the remote interior angles is also 91°.

Front

Identify the remote interior angles for Angle W in a triangle with angles X, Y, and Z.

Back

The remote interior angles for Angle W are Angle X and Angle Y.

Front

What is the measure of angle b if the exterior angle is 117° and one remote interior angle is 63°?

Back

Angle b measures 54°.

Front

If m∠B = 67°, what is the measure of the exterior angle adjacent to it?

Back

The measure of the exterior angle is 67° + the measure of the other remote interior angle.

Front

Define an exterior angle in the context of triangles.

Back

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

Front

What is the relationship between an exterior angle and its adjacent interior angle?

Back

The exterior angle is equal to the sum of the two remote interior angles, not the adjacent interior angle.

Front

If Angle d is an exterior angle, what type of angle is it?

Back

Angle d is classified as an exterior angle.

Front

How do you find the measure of an exterior angle?

Back

To find the measure of an exterior angle, add the measures of the two remote interior angles.