Question

the adjacent angle of a parallelogram are in the ratio 5:4 find the angle​

Answer 1

Answer:

let the angle be 5x and 4x.

so, sum of opposite angle of a parallelogram is 180

according to the question

5x+4x=180

9x=180

x=180/9

therefore x=20

so the angles are 5(20)=100 and 4(20)=80

therefore the angles are 100 and 80.

Answer 2

Answer:

Let the angle be 5x & 4x

5x + 4x = 180°.......(sum of adjacent angle is 180°)

9x = 180°

x = 180/9

x = 20

5x = 5 × 20 = 100°

4x = 4 × 20 = 80°

So,

The adjacent angles of parallelogram are 100° & 80°.