Tessellation

The equilateral triangle, the square and the regular hexagon are the only regular polygons that can form a tessellation of the plane.

Squares can be used for tessellation.

This is a tessellation of the plane with squares and regular octagons.

Decorative arches intersect the graceful latticework of the expansive ridge and furrow trainshed rooves, woven together by a staggering tessellation of 48,000 glass panels.