The four angles of a quadrilateral form an A.P. If the sum of the first 3 angles is 60 more than the 4th angle, then FIND ALL THE ANGLES
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Therefore, 54 + 80 + 116 + x = 360
⇒ 250 + x = 360
⇒ x = (360 - 250) = 110.
Hence, the measure of the fourth angle is 110°.
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4 angles sum property ..180 degree wholesome
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