Square

A square is a shape with four equal sides and four corners that are all right angles (90 degrees). The diagonals of a square also cross at right angles. The angle between any diagonal and a side of a square is 45 degrees. A square has rotational symmetry of four. It has four lines of regular symmetry.

A square is a type of rectangle with all sides of equal length. However note that while a square is a type of rectangle, a rectangle does not necessarily need to be a square.

A square is also the 2-dimensional analogue of a cube.

PROPERTIES OF SQUARE:

1. All the angles are equal.                                                                    
2. All the sides are of equal length.
3. Each of the angle is a right angle.
4. The diagonal are of equal length and breadth.
5. The diagonals bisect each other at right angles.

FORMULAS:

  Area of square=side*side

                       A=a*a 

                         =a² sq.units

 Perimeter of square=4a units