Angles and Angle Relationships Find the Missing Angle

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

Which Angles are Vertical Angles?

Name a pairs of vertical angles in the figure.

• ∠1 and ∠4

• ∠6 and ∠5

• ∠2 and ∠4

• ∠1 and ∠6

What angle pair is pictured?

• Alternate Interior Angles

• Supplementary Angles

• Vertical Angles

• Corresponding Angles

Find the missing angle.

• 60°

• 70°

• 50°

• 140

complementary, supplementary, or neither?

• Complementary

• Supplementary

• Neither

Find the missing angle.  Find x.

• 20^o

• 70^o

• 160^o

• 180^o

If m∠1 = 30°, then m∠3 = 

• 30°

• 60°

• 150°

• undetermined

Find the m∠1

• 67

• 113

• 180

• 23