Question

30.If angles A, B, C and D of a
quadrilateral ABCD, taken in
order, are in the ratio 3:7:6:4.
then ABCD is a​

Answer 1

3x + 7x + 6x + 4x = 360

20x = 360

2x = 36

x = 18

3x = 3 x 18 = 54 ------A

7x = 7 x 18 = 126------B

6x = 6 x 18 = 108-----C

4x = 4 x 18 = 72--------D

Checking

54 + 126 + 108 + 72 = 360

Hence Proved