Properties of Angles

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.

Use the image to answer the question.

• Definition of complementary angles
• Definition of vertical angles
• Definition of supplementary angles
• Definition of right angle

Find the missing angle

• 65

• 75

• 55

• 50

Find the missing angle.

• 72

• 68

• 90

• 78

Find the missing angle.

• 48

• 68

• 52

• 72

Find the missing angle.

• 70

• 50

• 30

• 40

Find the missing angle.

• 28

• 32

• 60

• 38

Find the missing angle.

• 36

• 38

• 26

• 24

Find the missing angle.

• 25

• 15

• 10

• 20

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