NanetteV NanetteV
  • 22-07-2020
  • Mathematics
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Thank u! Find the measure of the exterior angle.

Thank u Find the measure of the exterior angle class=
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wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 22-07-2020

Answer:

90

Step-by-step explanation:

The exterior angle is equal to the sum of the opposite interior angles

9x+9 = 45+5x

Subtract 5x from each side

9x-5x+9 = 45+5x-5x

4x+9 = 45

Subtract 9 from each side

4x+9-9 = 45-9

4x = 36

Divide by 4

4x/4 = 36/4

x = 9

The exterior angle is

9x+9

9*9+9

81+9

90

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