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14-05-2021
Mathematics

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Find the measure of the exterior angle.

Find the measure of the exterior angle class=

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14-05-2021

Answer:

u = 143º

Step-by-step explanation:

Sum of angles in a triangle is 180

The unknown angle IN the triangle

x + 90 + 53 = 180

x + 143 = 180

x = 37º

x and u are supplementary angle which total 180

u + 37 = 180

u = 143º

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