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11 October, 17:37

Two angles of a quadrilateral each measure 90°. A third angle of the quadrilateral measures 125°.

What is the measure of the fourth angle of the quadrilateral?

A.

55°

B.

65°

C.

90°

D.

125°

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Answers (2)
  1. 11 October, 17:52
    0
    Sum = 360

    360 - (90+90+125)

    = 360 - 305

    = 55

    answer is A.

    55°
  2. 11 October, 18:04
    0
    The sum of interior angles in a quadrilateral is 360 degrees, so you have 2 (90) + 125+x=360, solving for x you get x=55
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