Unit 7 Angles, Triangles, Volume, Surface Area Review

Complementary angles are angles that together equal

• 180 degrees

• 90 degrees

• 45 degrees

• 100 degrees

What is an example of a pair of complementary angles?

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

What is the complement of an angle whose measurement is 84 degrees?

• 96 degrees

• 6 degrees

• 86 degrees

• 16 degrees

Find the missing angle.

• 72

• 68

• 90

• 78

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

• Complementary
• Supplementary
• Neither

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

If ∠C and ∠D are supplementary, and the measure of ∠D is 45°, what is the measure of ∠C?

• 135
• 45
• 125
• 90

∠1 and ∠3 can best be described as what?

• complementary angles
• supplementary angles
• vertical angles
• adjacent angles

Tell whether the angles are complementary or supplementary. Then find the value of x.

• Complementary; x=25
• Complementary; x=5
• Supplementary; x=25
• Supplementary; x=5

Find the value of x.

• 15
• 30
• 45
• 60