Simple Angle Relationships

Which angles are vertical angles?

• x = 118

• x = 108

• x = 28

• x = 58

• x = 62

Which are pairs of vertical angles?

• ∠COB and ∠COA

• ∠AOD and ∠AOC

• ∠COB and ∠AOD

• ∠BOD and ∠AOD

Vertical angles are always

• acute
• total 180 degrees
• congruent (equal measures)
• adjacent angles

What is the value of x?

• 37
• 72
• 108
• 18

What is the definition of a complementary angle?

• Two angles that have the same measure

• A straight line that equals 180 degrees

• Two angles that measure 90 degrees

• Two angles that measure 180 degrees

What is the definition of a supplementary angle?

• Two angles that measure 180 degrees

• A right angle

• Two angles that measure 90 degrees

• Two angles that have the same measure

What is an example of a pair of complementary angles?

• 45° and 48°

• 79° and 30°

• 150° and 32°

• 36° and 54°

complementary, supplementary, or neither?

• Complementary
• Supplementary
• Neither

What is the measure of the missing angle?

• 76
• 86
• 166
• 156