In quadrilateral ABCD the measures of, A, B, C, and D are the ratio of 1 : 2:3:4, respectively. Find the measures of the four angles

So the ratio are 1:2:3:4 and all these add up to 10

Now we divide 360 by 10 resulting to 36

A = (36)

B = (72)

C = (108)

D = (144)

All these add up to 360 and has been divided equally according to the ration provided