The Equilateral reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Equilateral

An equilateral polygon has all sides of the same length. By definition a square is always equilateral (see also rectangle):

x x x x 

x x x x 

x x x x 

x x x x 

This triangle is also equilateral:

    x 

   x x 

  x x x 

 x x x x 

x x x x x

Any n-sided polygon which has n sides of equal length can be considered an equilateral. Not all equilaterals are convex geometric shapes: consider that for a pentagon two adjacent sides can be reflected in the line segment joining the two extreme vertices.

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