The supplementary angle of 87 degrees is 93 degrees
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Absolute value of 87 is 87.
The angle is 120°. Its supplement is 60°.
Suppose the angle is x then its supplement is 180 - x so 180 - x = x - 78 that is, 258 = 2x or x = 258/2 = 129 <><><><><> Angle + Supplement = 180 Angle = Supplement + 78 Solve for the system of equations... Angle + Supplement = 180 Angle - Supplement = 78 ------------------------------------- 2 Angle = 258 Angle = 129 Supplement = 51
135 degrees is the supplement of 45 degrees. When you minus 45 degrees from 180 degrees you will get 135 degrees which is the supplement angle of 45 degrees.
180 - angle = supplement 180- 160 = 20 degrees