Question

two adjacent angles of a parallelogram are in the ratio 4 ratio 5 find the measure of each of its angles

Answer 1

the sum of the adjacent angles in any parallelogram= 180 

Given, ratio of adjacent angles = 4:5 

4x+5x=180

9x=180

x=180/9

x= 20

Substitute x = 20 in above equations we get

 4x= 4*20 =80

 5x= 5*20 =100

Answer 2

Pls mark me as brainliest if this helps u.....
we know that adjacent sides of a parallelogram sum up to 180degree
Let the angles be 4x and 5x respectively
So,
4x+5x=180 degree
9x=180
x=180/9
x=20 degree
Therefore the angles are 4x=4*20
=80 degree
5x=5*20
=100 degree