SOLUTION: Angle C and Angle D are supplementary. Angle D is four times the measure of Angle C. Find the measure of Angle D and C. thank you

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Question 210571: Angle C and Angle D are supplementary. Angle D is four times the measure of Angle C. Find the measure of Angle D and C.

thank you
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Angle C and Angle D are supplementary. Angle D is four times the measure of Angle C. Find the measure of Angle D and C.
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C + D = 180
D = 4C
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Substitute for D to solve for C.
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C + 4C = 180
5C = 180
C = 36 degrees
D = 180-36 = 144 degrees
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Cheers,
Stan H.