Question

If one angle of quadrilateral is 135 degree and other angles are in the ratio 3: 5:7 find the angle

Answer 1

Answer:

sum of all angles of quadrilateral = 360

angles in ratio 3:5:7

let the angles

first angle =3x

second angel =5x

third angle =7x

fourth angle =135

sum of all angles = 3x+5x+7x+135=360

15x+135=360

15x=360-135=225

x=225/15

x=15

first angle =3*15=45

second angle=5*15=75

third angle =7*15=105

fourth angle is all ready =135