unit review

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 is the measure of the missing angle?

• 76
• 86
• 166
• 156

Practice 1a: Name a pair of complementary angles

Find the missing angle.

• 60
• 70
• 50
• 140

What are vertical angles?

• Angles that are adjacent to each other
• Angles that add up to 180°
• Angles that are opposite of each other when lines intersect
• Angles that add up to 90°

Practice 1b: Name a pair of vertical angles

Which are pairs of vertical angles?

• ∠COB & ∠COA
• ∠AOD & ∠AOC
• ∠COB & ∠AOD
• ∠BOD & ∠AOD

Identify the angle relationship.

• Adjacent

• Complementary

• Supplementary

• Vertical

Practice 1c: Name a pair of linear pair angles

What is the relationship of the angle pair?

• vertical

• supplementary

• adjacent

• complementary