Algebra

One angle of a pentagon measures t∘. The other four angles are congruent to one another. Give the measure of one of those angles in terms of t.

asked by help please
  1. some of interior angles of a pentagon = 180(3) = 540°
    let each of the other four equal angles be x
    t + 4x = 540
    4x = 540-t
    x = (540-t)/4 or x = 135 - t/4

    posted by Reiny

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