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OpenStudy (anonymous):
will give medal if help me please 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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OpenStudy (lucaz):
the sum of the interior angles of a quadrilateral is 360 degrees, so you have 2(90)+125+x=360, solving for x you get x=55
OpenStudy (anonymous):
thank you
OpenStudy (lucaz):
http://www.mathsisfun.com/geometry/interior-angles-polygons.html Take a look here
OpenStudy (anonymous):
cool thanks
OpenStudy (lucaz):
yw
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