Solving problems involving angles and equations

True or False.

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

Find the value of y.

• 15

• 85

• 95

• 19

• Definition of Supplementary Angles

• Supplements Theorem

• Congruent Supplements Theorem

• Definition of Linear Pair

Solve for x.

• 48.5

• 39

• 47.25

• 37.5

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

What is the measurement of the missing angle?

• 30
• 150
• 100

• Acute Angle

• Right Angle

• Obtuse Angle

• Supplementary Angles

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

• right angles
• corresponding angles
• complementary angles
• supplementary angles