Question

What is m∠A ?



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Answer 1

m∠A + m∠B + m∠C = 180° By Triangle Angle Sum Theorem

3x - 35 + x - 35 + x = 180

5x -70 = 180

5x = 110

x = 22

m∠A = 3x - 35

m∠A = 3(22) - 35

m∠A = 66 - 35

m∠A = 31

Hope this helps! ;)