Question

Two adjacent angle of a parallelogram are in the ratio 4:5. Find all the angle of parallelogram

Answer 1

Step-by-step explanation:

Let the two adjacent angles be (4×x)°= 4x° and (5×x)° = 5x°

By condition,

4x°+5x° = 180° (Co-interior angles)

4x+5x = 180

9x = 180

x = 180/9

x = 20

Angles are (4×20)°=80° and (5×20)°=100°

Answer 2

the angle may be 100 and 80