Solving problems involving angles and equations

Find the missing angle (x)

• x= 50

• x=180

• x=45

• x=51

The sum of the measures of two supplementary angles is 90 degrees.

• Always true

• Sometimes true

• Never true

∠1 and ∠2 can best be described as - 

• complementary angles
• supplementary angles
• vertical angles

Any two angles whose sum is $180\degree$  .

• Complementary Angles

• Supplementary Angles

• Vertical Angles

• Congruent Angles

Characteristics of Supplementary Angles (choose all that apply)

• share a side

• share an end point

• form right angle

• form straight line

• are congruent

Find the supplement of the angle

• 108^o

• 18^o

• 72^o

• 162^o

• complementary

• supplementary

The total number of degrees in supplementary angles

• 45

• 90

• 180

• 360

What is the value of x?

• 9

• 27

• 135

• 45