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11 June, 12:32

One angle is equal to three times its supplement the measure of the angle is

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  1. 11 June, 15:28
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    a = 135°

    b = 45°

    Step-by-step explanation:

    a + b = 180

    a = 3b

    ...

    3b + b = 180

    4b = 180

    b = 180 : 4

    b = 45°

    a = 3b = 3*45°

    a = 135°
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