A parallelogram is a quadrilateral in which both pairs of opposite sides are type of quadrilateral because it has four right angles and two pairs of parallel sides.
A quadrilateral also has four angles formed by its four sides. Let's start by examining the group of quadrilaterals that have two pairs of parallel sides. A square is also a rectangle because it has two sets of parallel sides and four right angles.
A Quadrilateral has four- sides, it is 2 -dimensional (a flat shape), closed (the A trapezoid (called a trapezium in the UK) has a pair of opposite sides parallel. Q-U-A-D-R-I-L-A-T-E-R-A-L: The Quadrilateral Rap