linear and vertical angles

Which angles are vertical angles?

1. Find X 

• 28
• 5
• 55
• 40

1. Find ∠ AOC 

• 130
• 50 
• 40

2. Find X

• 9
• 27
• 45

3. Find X

• 59
• 31
• 177

• x = 118

• x = 108

• x = 28

• x = 58

• x = 62

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

What is the value of x?

• 37
• 72
• 108
• 18

Find the value of x in the diagram so that the angles form a linear pair

• 118

• 62

• 72

• 68