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28 October, 08:22

One angle of a parallelogram measures 9°. What are the measures of the other three angles in the parallelogram?

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  1. 28 October, 08:37
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    Step-by-step explanation:

    Given

    It is a parallelogram so opposite angles of parallelogram are equal

    1st and 3rd angle = 9°

    2nd and 4th angles = x

    Now

    9° + 9° + x + x = 360°

    18° + 2x = 360°

    2x = 360° - 18°

    2x = 342°

    Therefore x = 171°

    Now

    measures of all other angles

    9°, 171°, 9° and 171°
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