Equilateral

In geometry, 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 appears equilateral in a fixed-width font:

    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.

See also: Equilateral, Convex, Fixed-width, Geometry, Pentagon, Polygon, Rectangle, Square (geometry), Triangle