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 also the 2-dimensional analogue of a cube.
Formulas[change | change source]
If the length of side a is known, then we have that:
|Length of diagonal|
If the length of diagonal d is known, then we have that:
|Length of side|
Related pages[change | change source]
References[change | change source]
- "List of Geometry and Trigonometry Symbols". Math Vault. 2020-04-17. Retrieved 2020-09-02.
- Weisstein, Eric W. "Square". mathworld.wolfram.com. Retrieved 2020-09-02.
- "Quadrilaterals - Square, Rectangle, Rhombus, Trapezoid, Parallelogram". www.mathsisfun.com. Retrieved 2020-09-02.
- "Square. Formulas and Properties of a Square". onlinemschool.com. Retrieved February 17, 2018.