Complementary

What are complementary 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.

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

What kind of angles are shown?

• complementary
• supplementary
• adjacent
• corresponding

• x = 118
• x = 108
• x = 28
• x = 58

If ∠H and ∠J are complementary, and the measure of ∠H is 35°, what is the measure of ∠J?

• 145
• 55
• 60
• 65

What is the measure of the missing angle?

• 76
• 86
• 166
• 156

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

• 180
• 50
• 60
• 80

Are these angles complementary, supplementary or neither?

• complementary
• supplementary
• neither

• x = 56
• x = 66
• x = 156
• x = 166