A quadrilateral in which both pairs of opposite sides are parallel , is called parallelogram.
1. Opposite sides are equal.
2. Opposite angles are equal.
3. Adjacent angles are supplementary (Sum of adjacent angles are 180°.)
4. Diagonals bisect each other.
Shaalaa.com | Parallelogram and It's Properties
Find the measure of ∠P and ∠S, if `bar(SP) || bar(RQ)` in the following figure. (If you find m∠R, is there more than one method to find m∠P?).