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Angle A and angle B are supplementary angles, if angle B equals 73°, what is the measurement of angle A?

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  1. 3 June, 14:20
    0
    Supplementary means adds to 180

    A+B=180

    B=73

    A+73=180

    minus 73 both sides

    A+73-73=180-73

    A+0=107

    A=107

    A=107 degrees
  2. 3 June, 14:22
    0
    Supplementary angles equal to 180 degrees.

    So you can set up an equation and have x be the measure of Angle A.

    73 + x = 180

    Solve for x.

    x = 107
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