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4 January, 10:13

The adjacent angles of a parallelogram are in the ratio 2:1 find all the angles

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  1. 4 January, 12:36
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    Adjacent angles of a parallelogram are supplementary. let the common multiple be x

    2x+x = 180

    3x=180

    x=180/3

    so x=60

    therefore the angles are:

    2x = 2*60 = 120

    &x=60.

    the required angle are 120°,120°,60,°60°
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