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10 December, 20:57

A quadrilateral has angles that measure 63, 89, and 121. What is the measure of the fourth angle?

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Answers (2)
  1. 10 December, 22:39
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    360-all of those is 87 so 87 is the answer
  2. 10 December, 23:47
    0
    Uh ... Lemme see. Add up all the angle measures and then subtract them from 360. In this case, the answer is 87.
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