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16 April, 01:03

If a quadrilateral has 3 angles measure 60,45 and 100; find the measure of the fourth angle

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  1. 16 April, 01:14
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    The fourth angle is 155

    Step-by-step explanation:

    The sum of the angles of a quadrilateral are 360 degrees

    60 + 45 + 100 + x = 360

    Combine like terms

    205+x = 360

    Subtract 205 from each side

    205+x-205 = 360-205

    x = 155
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