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28 November, 02:29

The angles in a triangle have measurements (7X-8), (3X+3), and (18x-11). Is this triangle acute obtuse or right

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  1. 28 November, 04:14
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    All angles in a triangle sum to 180°, so

    (7x - 8) + (3x + 3) + (18x - 11) = 180

    28x - 16 = 180

    28x = 196

    x = 7

    (18x - 11) is the clearly largest angle

    18 (7) - 11 = 115°

    115° is an obtuse angle, therefore the triangle is obtuse
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