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If m∠A =91° and m∠B = 40°, find m∠1. A) 89° B) 122° C) 131° D) 140°

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PlushyObject · Answer 1 · 2018-06-15T02:13:13+0000

Assuming this is a triangle, all three angles should add to 180º
91 + 40 + x = 180
131 + x = 180
Subtract 131 from both sides
x = 49
The measure of angle 1 is 49º

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