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13-05-2018
Mathematics

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An angel is 20 degrees less than the measure of its supplement . Find the measure of the angle

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13-05-2018

Let the supplement angle be x.

Supplement angles add up to 180:
x + x - 20 = 180
2x - 20 = 180
2x = 200
x = 100

Angle = 100 - 20 = 80

Answer: The angle is 80°

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