Square pizza stone

This article is about the polygon. All four sides of a square are equal. Opposite sides square pizza stone a square are parallel.

2 case of the families of n-hypercubes and n-orthoplexes. The area of a square is the product of the length of its sides. Since four squared equals sixteen, a four by four square has an area equal to its perimeter. The only other quadrilateral with such a property is that of a three by six rectangle. In classical times, the second power was described in terms of the area of a square, as in the above formula. This led to the use of the term square to mean raising to the second power.

Because it is a regular polygon, a square is the quadrilateral of least perimeter enclosing a given area. Dually, a square is the quadrilateral containing the largest area within a given perimeter. This value, known as the square root of 2 or Pythagoras’ constant, was the first number proven to be irrational. A square can also be defined as a parallelogram with equal diagonals that bisect the angles. A square has a larger area than any other quadrilateral with the same perimeter.

The square is in two families of polytopes in two dimensions: hypercube and the cross-polytope. The square is a highly symmetric object. Its symmetry group is the dihedral group D4. A square can be inscribed inside any regular polygon. The only other polygon with this property is the equilateral triangle.