题库 Math 题目列表 Twice the measure of the supplement of an angle is...
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Twice the measure of the supplement of an angle is added to three times the measure of the complement of the same angle. The sum is the measure of an interior angle of a regular nine-sided polygon. What is the measure of the supplement of the angle? 

A.

82

B.

86

C.

90

D.

94

E.

none of them

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