Are adjacent angles in a parallelogram supplementary?

1 Answer
Dec 26, 2015

Your are correct in that statement.


In a parallelogram, opposite angles have equal lengths, and so in each parallelogram there are two pairs of equal angles. In a parallelogram, the angles add up to 360˚. Since there are two pairs of angles and one of each pair is on each side, adjacent angles are supplementary (their sum makes 180˚)

The following diagram explains: