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8 December, 20:13

The ratioof the interior angle measurements of a triangle is 1:4:5. what are the angle measurements

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  1. 8 December, 20:24
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    The measures of the interior angles of a triangle have sum 180°.

    Since the measures of the angles are in the ratio 1:4:5, we can call them 1x, 4x, and 5x, for some positive integer, x.

    So, x + 4x + 5x = 180

    10x = 180

    x = 18 4x = 72, 5x = 90
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