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

Explanation

let the first angle be `x^@`
then according to the question
its adjacent angle is `(2/3)x^@`
as we that the sum the adjacent angles of a parallelogram is `180^@`
so,
`x^@+(2/3)x^@=180^@`
`x=108^@`
and its adjacent angle is `180^@-108^@=72^@`
so the angles are`108^@,108^@,72^@,72^@`