Angle relationships

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

• 15
• 16
• 18
• 19

What is the measure of the missing angle?

• 39°
• 129°
• 119°
• 129°

Find the m∠1

• 67
• 113
• 180
• 23

A pair of angles that add up to 180º

• Complementary
• Complimentary
• Supplementary

A pair of angles that add up to 90º

• Complementary
• Complimentary
• Supplementary

Identify the relationship:

• vertical

• supplementary

Identify the relationship:

• vertical

• supplementary

Identify the relationship:

• vertical

• supplementary (angles add up to 180^o)

• complementary (angles add up to 90^o)