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Which expression could you use to find the measure of an angle that is supplementary to 63 degrees.

A) 90 degrees + 63 degrees
B) 90 degrees - 63 degrees
C) 180 degrees + 63 degrees
D) 180 degrees - 63 degrees

From the definition of a supplementary angle (that the sum of the two must be 180), the answer is (D)

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