Mastering Interior and Exterior Angles of Triangles

This video tutorial explains how to solve math problems involving triangles and missing angles. It covers key concepts such as the exterior angle theorem, the sum of interior angles, and methods to find missing angles. The tutorial provides example problems to illustrate these concepts and demonstrates multiple ways to solve for unknown angles using the properties of triangles.

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

• They are equal.

• They are supplementary.

• They are congruent.

• They are complementary.

If an exterior angle of a triangle is 120 degrees, what is the measure of its adjacent interior angle?

• 80 degrees

• 180 degrees

• 120 degrees

• 60 degrees

What is the sum of the interior angles of a triangle?

• 270 degrees

• 360 degrees

• 90 degrees

• 180 degrees

If a triangle has two angles measuring 50 degrees and 60 degrees, what is the measure of the third angle?

• 90 degrees

• 70 degrees

• 80 degrees

• 100 degrees

How is the measure of an exterior angle of a triangle related to the two non-adjacent interior angles?

• It is equal to their product.

• It is equal to their difference.

• It is equal to their sum.

• It is equal to their average.

If an exterior angle of a triangle is 120 degrees and one of the non-adjacent interior angles is 50 degrees, what is the measure of the other non-adjacent interior angle?

• 70 degrees

• 60 degrees

• 80 degrees

• 90 degrees

In a triangle, if one interior angle is 50 degrees and another is 60 degrees, what is the measure of the third angle?

• 80 degrees

• 70 degrees

• 60 degrees

• 50 degrees

If an exterior angle of a triangle is 140 degrees, what is the sum of the two non-adjacent interior angles?

• 100 degrees

• 120 degrees

• 140 degrees

• 160 degrees

If two interior angles of a triangle are 60 degrees and 80 degrees, what is the measure of the third interior angle?

• 50 degrees

• 30 degrees

• 60 degrees

• 40 degrees

If an exterior angle of a triangle is 140 degrees and one of the non-adjacent interior angles is 60 degrees, what is the measure of the other non-adjacent interior angle?

• 70 degrees

• 90 degrees

• 60 degrees

• 80 degrees