Find the Measure of the Angle Equations

Which equation would you use to find x?

• 3x + 4 + 8x + 16 = 130

• 3x + 4 + 130 = 8x + 16

• 8x + 16 + 130 = 3x + 4

If m∠ABC = 103° find x.

Set up the equation to solve for x

• 8x + 2 +70 + 60 = 180

• 8x + 2 = 180

• 8x + 2 = 70 + 60

• 70 + 8x + 2 = 60

Set up the equation to find the missing angle

• 40 + 90 = x

• 40 + 90 + x = 180

• 180 = 40 - 90

• x + 40 + 40 = 180

Set up the equation to solve for the missing angle

• 50 + 120 + x = 180

• x + 50 = 120

• 120 + 50 = x

• x + 120 = 50

Set up an equation to find the missing angle

• 50 + 115 = x

• x + 50 + 115 = 180

• x + 50 = 115

• 50 + x = 180

Set up an equation that will help you find the missing angle

• 58 + x = 28

• x + 28 = 58

• 28 + 58 + x = 180

• 28 + 58 = x

Set up an equation that will help you solve for x

• x + 21 = 34

• 21 + 34 + x = 180

• 21 + 34 = x

• 34 + x = 21

Set up an equation that will help you find the missing angle

• 80 + x = 110

• 80 + 110 + x = 180

• 110 + x = 80

• 80 + 110 = x