Art of Problem Solving

Square (geometry): Difference between revisions

No edit summary
MCrawford (talk | contribs)
wrote first sentence, organized introductory section
Line 1: Line 1:
== A Square ==
A '''square''' is a four-side geometric figure in which all sides are equal and all [[angle | angles]] are [[right angle | right angles]].
A square is a a special [[quadrilateral]] in that it is regular. A square has four equal sides and four equal angles, each angle measuring 90 degrees.
 
 
== Introductory ==
A square is a a special [[quadrilateral]] in that it is regular.  


=== Area ===
=== Area ===

Revision as of 22:34, 19 June 2006

A square is a four-side geometric figure in which all sides are equal and all angles are right angles.


Introductory

A square is a a special quadrilateral in that it is regular.

Area

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

Perimeter

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

Diagonal

The Diagonal of a square is obtained by the Pythagorean theorem. $D=\sqrt{s^2+s^2}=s\sqrt{2}$

See Also