### Home > CCAA > Chapter 9 Unit 8 > Lesson CC2: 9.1.1 > Problem 9-21

9-21.

Review the definitions of complementary, supplementary, and vertical angles. Use the information to answer the following questions. Homework Help ✎

Two angles are complementary. If one measures

, what is the measure of the other angle? Two angles are supplementary. If one measures

, what is the measure of the other angle? Two angles are vertical. If one measures

, what is the measure of the other angle?

Refer to the Math Notes Box from Lesson 8.3.2 to help you answer this question.