SOLUTION: DEF and ABC are supplementary angles and DEF is four times as large as ABC. Determine the measure of each angle.

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Question 479481: DEF and ABC are supplementary angles and DEF is four times as large as ABC. Determine the measure of each angle.
Answer by cleomenius(959) About Me  (Show Source):
You can put this solution on YOUR website!
4x + x = 180
5x = 180
x = 36 degrees
4x = 144 degrees
144 degrees+ 36 degrees = 180 degrees
Cleomenius.