|A square is a regular quadrilateral.It has four equal sides and four equal angles (90-degree angles, or right angles). It can also be defined as a rectangle in which two adjacent sides have equal length.
|Area of the square is= 3 * 3=9|
|Perimeter of the square is= 4 * 3=12|
|Diagonal of the square is= 3 * 1.732=4.2426|