For a pdf file of this image, click here.
Go to the following link which will give you a better understanding of a square.
Click on the following link: http://www.mathopenref.com/
Follow the following paths:
Plane Geometry > Quadrilaterals > Squares
Plane Geometry > Quadrilaterals > Square definition
Plane Geometry > Quadrilaterals > Area of a Square
Plane Geometry > Quadrilaterals > Perimeter of a Square
Plane Geometry > Quadrilaterals > Diagonals of a Square
Follow the following paths:
Plane Geometry > Quadrilaterals > Squares
Plane Geometry > Quadrilaterals > Square definition
Plane Geometry > Quadrilaterals > Area of a Square
Plane Geometry > Quadrilaterals > Perimeter of a Square
Plane Geometry > Quadrilaterals > Diagonals of a Square