| Square | Parallelogram |
|---|
 |  |
| A square is a quadrilateral | A parallelogram is also a quadrilateral |
| Opposite sides of square are parallel to each other | Opposite sides of parallelogram are also parallel to each other |
| Opposite angles of square are equal | Opposite angles of parallelogram are also equal | |
| Adjacent angles of square are supplementary | Adjacent angles of parallelogram are also supplementary |
| Diagonals of square bisect each other | Diagonals of parallelogram also bisect each other |
| Diagonals of Square are of equal length | Diagonals of parallelogram are not of equal length |
| Diagonals of Square are perpendicular bisector of each other | Diagonals of parallelogram are not perpendicular bisector of each other |
| All angles of a Square are of 90 Degree each i.e. right angled at each vertex | Angles of parallelogram can be of different degree |
| All sides of square are of equal length | Only opposite side of parallelogram are of equal length |