Posted by jim on Thursday, November 25, 2010 at 2:24pm.
A + B + C = 180 Deg.
11x + (3x + 4) + (x - 4) = 180,
15x = 180,
x = 180 / 15 = 12.
A = 11X = 11 * 12 = 132.
B = (3X + 4) = 36 + 4 = 40.
C = (X - 4) = 12 - 4 = 8.
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