Angle Relationships

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°

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

If m∠1 = 30°, then m∠3 = 

• 30°
• 60°
• 150°
• undetermined

What is the value of x?

• 37
• 72
• 108
• 18

Find the value of x.

• 14
• 60
• 35
• 180

3. Find ∠NOQ

• 31
• 59
• 180
• 149

The measure of ∠BAD = 110°. What is the measure of ∠CAD?

• 82^o

• 90^o

• 72^o

• 62^o

Which equation would help you find the measure of angle x?

• 2x=141

• 2x+x=141

• x=141

The measure of ∠BAD = 110°. What is the measure of ∠CAD?

• 82^o

• 90^o

• 72^o

• 62^o