Question

in quadrilateral ABCD angle A ratio Angle B ratio angle C ratio angle d = 4 ratio 5 ratio 4 ratio 5 find all the angles of quadrilateral ABCD.​

Answer 1

Step-by-step explanation:

A:B:C:D=4:5:4:5.

let the angles A=4x , B=5x, C=4x , D=5

We know,

A+B+C+D=360°

4x+5x+4x+5x=360

18x=360°

x=20°

A=C=4×20°=80°

B=D=5×20°=100°