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Find the measure of the exterior angle.

Find the measure of the exterior angle.-example-1
User Linuscash
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\huge{ \mathfrak{ Answer }}

Exterior angle = sum of opposite interior angles,

so,


\boxed{(t + 10 )+( t )= 180-(t + 20)}


  • 2t + 10 = 180 - t - 20

  • 2t + t = 160 - 10

  • 3t = 150

  • t = 50

value of t = 50°


\boxed{Exterior \: \: angle = 180 -(t + 20)}


  • 180 - (50 + 20)

  • 180 - 70

  • 110°

measure of exterior angle is 110°


\\ormalsize{ \#TeeNForeveR}

User Jevl
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7.5k points
4 votes
110 degrees because the other side is equal to 70° and the line is 180 so you would subtract 70 from 180 to get you 110°
User Syntactic Fructose
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