Square facts for kids
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 with vertices A, B, C and D can be written as 
.
A square is a type of rectangle with all sides of equal length. However, while a square is a type of rectangle and rhombus, the opposite does not need to be true.
A square is also the 2-dimensional analogue of a cube.
Contents
Formulas
If the length of side a is known, then we have that:
| Perimeter |  |
| Area |  |
| Length of diagonal |  |
If the length of diagonal d is known, then we have that:
| Length of side |  |
| Perimeter |  |
| Area |  |
Related pages
Images for kids
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Square at a given circumcircle
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Crossed-square
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3-simplex (3D)
See also
In Spanish: Cuadrado para niños
