Question

answer this question of chapter Quadrilateral

Answer 1

Let the three angles=2x,5x,4x

(2x+5x+4x)/3=77

11x/3=77

x=(77*3)/11

x=7*3=21 degrees

The angles are-

2x=2*21=42 degrees

5x=5*21=105 degrees

4x=4*21=84 degrees

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