
Jon S. answered 09/11/20
Patient and Knowledgeable Math and English Tutor
By angle addition postulate, m<EFH + m<HFG = m<EFG
substituting the measures of those angles from the given information:
5x + 1 + 62 = 18x + 11
solve for x.
x = 4
so m<EFH = 5x + 1 = 5*4 + 1 = 21
m<EFG = 18x + 11 = 18*4 * 11 = 83
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