Question

the angle of a quadrilateral in the ratio 4:5:4:5 find the angle and give a special name to the quadrilateral

Answer 1

let degree be x
4x:4x:5x:5x=360. (angle sum pro.)
18x=360
x=20degree
4×20=80 degree
5×20=100 degree

Answer 2

this answer may help in finding your answer.