SOLUTION: Two angles are supplementary.If one angle measures twice the other.

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Question 551531: Two angles are supplementary.If one angle measures twice the other.
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Let's say the angles are A and B.
If A and B are supplementary then A+B = 180 degrees.
If angle A = 2B then:
A+B = 180 Substitute A = 2B.
2B+B = 180
3B = 180
B = 60 degrees and A = 2(60) = 120 degrees.