Carol H. answered 01/21/18
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Let x = the measure of angle A
Ler 5x = the measure of angle B
Let 5x + 4 = the measure of angle C
x + 5x + 5x + 4 = 180
11x = 176
x = 16
m∠A = 16º
m∠B = 5(16) = 80º
m∠C = 80 + 4 = 84º