Question

two adjacent angles of a parallelogram are in the ratio 4 ratio 5 find the measure of all angle of a parallelogram​

Answer 1

Answer:

80,100

Step-by-step explanation:

x+y=180

x:y=4:5

4a+5a=180

9a=180

a=20

x=4*20=80

y=5*20=100