. The four angles of a quadrilateral are in the ratio 2:3:5:8. Find the angles
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1. the ratio of angles of a quadrilateral are 2:3:5:8

   let the 4 angles be 2x, 5x, 3x, and 8x

   we know, the sum of 4 angles of quadrilateral is 360°

   there fore 2x+3x+5x+8x=360°

   18x=360°

   x=20°

   the angles are

   2x=2×20=40°

   3x=3×20=60°

   5x=5×20=100°

   8x=8×20=160°

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