Solving Equations with Complementary and Supplementary Angles

What are supplementary angles?

• Angles that add up to 180°
• Angles that add up to 90°
• Angles that are equal to each other
• Angles that are opposite of each other when lines intersect

A straight line measures...

• 90 degrees

• 180 degrees

• 0 degrees

• 360 degrees

What is the complement of an angle whose measurement is 84 degrees?

• 96 degrees

• 6 degrees

• 86 degrees

• 16 degrees

If ∠C and ∠D are supplementary, and the measure of ∠D is 45°, what is the measure of ∠C?

• 135
• 45
• 125
• 90

What are complementary angles?

• Angles that add up to 180°
• Angles that add up to 90°
• Angles that are equal to each other
• Angles that are opposite of each other when lines intersect.

If ∠A and ∠B are supplementary, and the measure of ∠A is 120°, what is the measure of ∠B?

• 180
• 50
• 60
• 80

complementary, supplementary, or neither?

• Complementary
• Supplementary
• Neither

What is the value of "x"?

• 19
• 20
• 21
• 22

Find the value of "x".

• 25

• 5

• 10

• 15

Find the value of "5x+25".

• 75

• 15

• 90

• 10