Question

One angle of the parallelogram is ${80}^{\circ }$. Write in degrees the other angle, not equal to ${80}^{\circ }$ in the parallelogram?

Answer 1

A parallelogram has 2 non equal angles. The opposite angles are equal. The adjacent angles are supplementary. Hence the 2 non-equal angles are supplementary.

Thus (80 + Unequal Angle) = 180

Thus unequal angle = ${100}^{\circ }$