Solving Equations with Complementary, Supplementary, and Vertical Angles

Which equation is correct in order to find the value of x?

• 9x + 210 + 4x + 140 = 180

• 9x + 210 + 4x + 140 = 360

• 9x + 210 = 4x + 140

• 9x + 210 + 4x + 140 = 90

These angles are supplementary.

• True

• False

What is the reason?

• Definition of Complementary

• Definition of 180 

• Definition of supplementary

• Angle Addition

Find the measure of angle b.

Hint: Identify the angle relationship.

• 25

• 115

• 65

Q1. What is the sum of 10 and 7?

• 1) 10

• A) 17

• 2) 80

• 3) 90

Q1. How many apples are there?

• 1) 25

• A) 35

• 2) 45

• 3) 55

• 23
• 20
• 44
• 16

Find the value of y.

• 15

• 85

• 95

• 19

• Definition of Supplementary Angles

• Supplements Theorem

• Congruent Supplements Theorem

• Definition of Linear Pair

Two angles that add up to 180 degrees are called _____________ ______.

• right angles

• corresponding angles

• complementary angles

• supplementary angles