### Home > MC1 > Chapter 8 > Lesson 8.3.2 > Problem 8-99

8-99.

For each of the diagrams below, identify each set of angles as complementary, supplementary, vertical, or none. (Refer to the Lesson 8.4.1 Math Notes box to review these terms.) **Explain** how you know.

See the excerpt from Lesson 8.4.1 Math Notes box for help with this problem.

Vertical angles

What is the sum of

? Remember that a square indicates a right angle.These are complementary angles.

For parts (c) and (d), think about what the sum of the two given angles is. Look at the definitions in the Math Notes if you need help.

Angles

andare related in two ways. How are they positioned? What is their sum?

Are

andrelated in any special way? None