Radio of angles =3:5:9:13
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Let the common ratio between the angles be = x. As they are in ratio 3 : 5 : 9 : 13, so we can assume angles be as 3x, 5x, 9x and 13x. Hence, the angles of quadrilateral are 36°, 60°, 108° and 156°
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3:5:9:13 = 360
3n + 5n + 9n + 13n = 360
30n = 360
n = 360/30 = 12
3n = 36
5n = 60
9n = 108
13n = 156
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