Question

The adjacent angles of a parallelogram
are in the ratio 4: 5. Find the measure of
all the angles of the parallelogram.​

Answer 1

Answer:

Step-by-step explanation:

Adjacent angles are supplementary

4x + 5x = 180

9x = 180

x = 180/9 = 20

4x = 4x20=80

5x = 5x20=100

Opposite angles are equal and therefore the angles of the parallelogram are 80, 80, 100,100 degree