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The measure of an angle is 4y°. Find the measure of its supplement. A) (180 + 4y)° B) (180 - 4y)° C) (90 + 4y)° D) (90 - 4y)°

User Saurel
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Supplementary angles are two angles that forms a total of 180 degrees. If the measure of an angle is 4y degrees, then the measure of the supplementary angle is 180-4y. That is letter B.
User JosephH
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