Complementary & Supplementary Angles

by Danielle Bailey

| 11 QuestionsDirections: Use what you know about Complementary Angles (two angles that add up to 90 degrees) and Supplementary Angles (two angles that add up to 180 degrees) to answer the following questions.

1

1

The sum of the measures of two complementary angles is 90 degrees.

Always True

Sometimes True

Never True

2

1

Two angles that are obtuse will be supplementary.

Always True

Sometimes True

Never True

3

1

Two angles that are supplementary measure 90 degrees each.

Always True

Sometimes True

Never True

4

1

Draw a pair of complementary angles.

5

1

Explain how you know the angles you drew above are complementary.

6

1

Draw a pair of supplementary angles.

7

1

Explain how you know the angles you drew above are supplementary.

For the following questions, determine what the missing value is. Make sure to include "degrees" with your answer.

8

1

Looking at the angle relationship above, what is the value of x?

9

1

Looking at the angle relationship above, what is the value of x?

10

1

Looking at the angle relationship above, what is the value of x?

11

1

Looking at the angle relationship above, what is the value of y?

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