Difference between revisions of "Square (geometry)"

m (Square moved to Square (geometry): Removing confusion with "perfect square")
m
Line 17: Line 17:
 
== See Also ==
 
== See Also ==
 
* [[Unit Square]]
 
* [[Unit Square]]
* [[Cube]]
+
* [[Cube (geometry) | Cube]]

Revision as of 11:19, 30 October 2006

A square is quadrilateral in which all sides have equal length and all angles are right angles.

Equivalently, the squares are the regular quadrilaterals.


Introductory

Area

The area of a square can be found by squaring the square's side length: the area $A$ of a square with side length $s$ is $A = s^2$.

Perimeter

The perimeter $P$ of a square can be found by multiplying the square's side length by four - $P = 4s$.

Diagonal

The length of either diagonal of a square can be obtained by the Pythagorean theorem. $D=\sqrt{s^2+s^2}=s\sqrt{2}$


See Also