three angles of a quadrilateral are 60,120 180 degree find the fourth angle of the quadrilateral
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sum of the angles of the quadrilateral are=360°
60+120+180+x=360
360+x=360
x=360-360
x=0
60+120+180+x=360
360+x=360
x=360-360
x=0
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Angle sum property of a quadrilateral =
60+120+180+x=360
x=0°
60+120+180+x=360
x=0°
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