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If the degree measures of the angles of quadrilateral are 2x, 4x, 5x and 7x, then what is the sum of the measures of the smallest angle and largest angle? |

A) 200 B) 140 C) 160 D) 180 Correct Answer :180 Explanation :In a quadrilateral, sum of all angles is 360 degrees. Smallest angle is, 2x = 40° Sum of their angle =140+40 =180° |