Angles and Triangles

Find the value of x.

• x=15

• x=16

• x=18

• x=19

What is an example of a pair of complementary angles?

• 13° and 45°
• 10° and 170°
• 81° and 9°
• 90° and 3°

What kind of angles are shown?

• complementary
• supplementary
• adjacent
• corresponding

Find the missing angle.

• 60°
• 70°
• 50°
• 140

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 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

• x = 118
• x = 108
• x = 28
• x = 58

Solve for x

• x = 20

• x = 25

• x = 120

• x = 180

Solve for x

• x = 5

• x = 90

• x = 25

• x = 10

complementary, supplementary, or neither?

• Complementary
• Supplementary
• Neither