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What is the answer and how do you find it?

What is the answer and how do you find it?-example-1
User Pelos
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1 Answer

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According to the Exterior Angle Theorem, the measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles of the triangle.
11x+2=5x+10 + 58
6x=66
x=11
User Gfkri
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