Question 1089710

The three angles must add to 180 degrees.
We can write angle B as "A" because they are equal, giving us:

2A + (A+63) = 180
3A + 63 = 180
3A = 117 
A = 39  —> B = 39,  C = 39+63 = 102

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Ans:  The angles A & B  are each 39 degrees, while angle C measures 102 degrees.
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Check:   39+39+102 = 78+102 = 180  (ok)