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10 July, 05:09

The measure of an angle is 88.9°. what is the measure of a supplementary angle?

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  1. 10 July, 06:18
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    The sum of supplementary angles is 180°. To find the measure of the supplementary angle of 88.9°, make an equation.

    a + 88.9 = 180

    Solve for a

    a + 88.9 = 180

    a = 180 - 88.9

    a = 91.1

    The measure of the supplementary angle is 91.1°
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