Question

Q.1. If an angle of a parallelogram is two-third
of its adjacent angle, find the angles of the
parallelogram.​

Answer 1

Let one angle=x

Let second angle=2/3of x =2/3x

1st angle+2nd angle=180°

x+2/3x=180°

5/3x=180°

x=180°×3/5

x=36×3

x=108°

so one angle=x=108°

second angle=2/3x=2/3×108°=72°