Question

Two adjacent angles of a parallelogram are in the ratio 4:5. Then their measures are

Answer 1

Answer:

Their measures are 80° and  100°

Step-by-step explanation:

Sum of adjacent angles in parallelogram = 180°

The ratio of adjacent angles is 4:5.

Let smaller angle be 4x

The other  angle be 5x

⇒ 4x+5x=180

⇒9x=180

x=180/9 = 20

4x= 4*20 = 80°

5x=5*20= 100°