Classify Angles Vertical and Adjacent Angles

Which are pairs of vertical angles?

• ∠COB & ∠COA

• ∠AOD & ∠AOC

• ∠COB & ∠AOD

• ∠BOD & ∠AOD

Find the missing angle.  Find x.

• 20^o

• 70^o

• 160^o

• 180^o

Vertical angles are always

• acute

• total 180 degrees

• congruent (equal measures)

• adjacent angles

Tell whether the angles are adjacent or vertical.​ (a)  

• adjacent

• vertical

Tell whether the angles are adjacent or vertical. Then find the value of x

• adjacent 25

• adjacent 75

• vertical 25

• vertical 75

What is the value of x?

• 37

• 72

• 108

• 18

Which are pairs of adjacent angles?

• ∠COB & ∠DOA

• ∠AOD & ∠AOC

• ∠COB & ∠AOD

• ∠BOD & ∠AOC

Find the value of x.

• 14

• 60

• 35

• 180

What does X equal?

• X=51

• X=45

• X=39

Find the value of x.

• 15

• 17

• 85

• 10