Question

two adjacent angles of parallelogram are in the ratio 7 ratio 2 find the measure of all the angles of a parallelogram

Answer 1

let the adjacent angle be 7x and 2x
7x +2x= 180 [composite no]
9x=180
x=180/9
x=20
7x= 140
2x=40

Answer 2

take those angles as 7x & 3x
adjacent angles of a parallelogram is 180°
7x + 2x = 180°
9x = 180°
x = 20°

2x = 2×20 = 40°
7x= 7×20 = 140°
in a parallelogram opposite angles are equal so u will get all the angles.

Hope u find this helpful!!