Question

two adjacent angle of a parallelogram

Answer 1

Since sum of adjacent angles of parallelogram = 180°

Let the meet of ratio of angles be x.

Hence 4x + 5x = 180°

= 9x = 180°

= x = 180°/ 9

= x = 20°

Hence Angles are 4 x and 5 x.

= 4*20° and 5*20°

= 80° and 100°.

So all angles of parallelogram are 80°, 100°, 80° and 100°.

Because opposite angles of a parallelogram are equal.

Hope it's helpful to u.

Answer 2

the two adjacent angle of a parallelogram=180
then,
4x+5x=180
9x=180
x=20
now substituting that x=20
4x=4×20=80
5x=5×20=100