Angle Relationships/Transversals

Vertical angles are always

• acute

• total 180 degrees

• congruent (equal measures)

• adjacent angles

Which are pairs of adjacent angles?

• ∠COB and ∠DOA

• ∠AOD and ∠AOC

• ∠COB and ∠AOD

• ∠BOD and ∠AOC

Which are pairs of vertical angles?

• ∠COB and ∠COA

• ∠AOD and ∠AOC

• ∠COB and ∠AOD

• ∠BOD and ∠AOD

What angle is vertical to angle 2?

• ∠4

• ∠1

• ∠2

• ∠5

Find the missing angle.  Find x.

• 20^o

• 70^o

• 160^o

• 180^o

• x = 118

• x = 108

• x = 28

• x = 58

• x = 62

Which angles are vertical angles?