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14 November, 16:18

Angles A and B are supplementary. Angle A has a measure of 54 what is the measure of B

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  1. 14 November, 17:24
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    The measure of B is 126.

    Step-by-step explanation:

    When 2 angles are supplementary, they add up to 180. Since you already know one of the angles (A), you can find out what angle B is.

    180-54=126
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