the angle of quadrilateral are in the ratio 3: 5: 9: 13. find all the angles of this quadrilateral
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let 3x,5x,9x,and 13x be an angle of quadrilateral
so,
3x+5x+9x+13x=360
30x=360
x=12
3x=3×12=36
5x=5×12=69
9x=9×12=108
13x=13×12=156
so,
3x+5x+9x+13x=360
30x=360
x=12
3x=3×12=36
5x=5×12=69
9x=9×12=108
13x=13×12=156
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