The parantha can be round, heptagonal, square, or triangular.
The full set of edges coincide with the edges of a heptakis heptagonal tiling.
Twenty-two is a pentagonal number and a centered heptagonal number.
Apart from the heptagonal prism and heptagonal antiprism, no convex polyhedron made entirely out of regular polygons contains a heptagon as a face.
The building is heptagonal and has a fireplace in the center.
The nave is narrow and rectangular, extending to a heptagonal chancel at the eastern end.
Figurate numbers representing heptagons (including seven) are called heptagonal numbers.
For example, the sixth heptagonal number (81) minus the sixth hexagonal number (66) equals the fifth triangular number, 15.
