Angles Introduction

What is an example of a pair of complementary angles?

• 13° and 45°

• 10° and 170°

• 81° and 9°

• 90° and 3°

What are supplementary angles?

• Angles that add up to 180°

• Angles that add up to 90°

• Angles that are equal to each other

• Angles that are opposite of each other when lines intersect

complementary, supplementary, or neither?

• Complementary

• Supplementary

• Neither

• x = 118
• x = 108
• x = 28
• x = 58

Find the missing angle.

• 60°

• 70°

• 50°

• 140

Are these angles an example of complementary, supplementary, or neither?

• Complementary

• Supplementary

• Neither

These angles are...

• Complementary

• Supplementary

• Neither

What is the measure of the missing angle?

• 39

• 129

• 119

• 129

If ∠A and ∠B are supplementary, and the measure of ∠A is 120°, what is the measure of ∠B?

• 180

• 50

• 60

• 80

If ∠H and ∠J are complementary, and the measure of ∠H is 45°, what is the measure of ∠J?

• 135

• 45

• 60

• 55