Complementary, Supplementary, and Vertical Angles

If m∠1 = 30°, then m∠3 = 

• 30°

• 60°

• 150°

• undetermined

Find the missing angle.

• 60

• 70

• 50

• 140

Supplementary Angles measure _____ degrees.

• 180

• 55

• 100

• 90

Find the value of x.

• 18°

• 28°

• 38°

• 118°

What is an example of a pair of complementary angles?

• 13° and 45°

• 10° and 170°

• 81° and 9°

• 90° and 3°

Practice 1b: Name a pair of vertical angles

Practice 1a: Name a pair of complementary angles

Use the diagram to solve for m∠BAD.  ∠CAB is a right angle.
m∠1 = (x² -5x)° and m∠2 = (3x+42)°.

• 24° & 66°

• Only 24°

• Only 66°

The supplement of an angle is 12  more than twice its complement. Find the complement of the supplement of the angle.

• 12°

• 168°

• 78°

• No Solution

The supplement of an angle is four less than three times the complement of the angle. Find 0.5 of the supplement of the angle.

• 23.5°

• 43°

• 68.5°