Question 1155177: An angle measures 18.8° less than the measure of its supplementary angle. What is the measure of each angle? Answer by ikleyn(52818) (Show Source):
Let x be "the angle".
Then its supplementary angle measure is 180-x degrees,
so an equation to find x is
(180-x) - x = 18.8.
written exactly as you read the problem. From this equation,
180 - 18.8 = 2x
x = = 80.6 degrees.
ANSWER. The angles are 80.6 degrees and 180-80.6 = 99.4 degree.