Friday mosque, Varamin

• The symmetry group of the tiling is 632 (p6).
• All the internal angles of the constituent polygons are a multiple of 60°.
• Contains one regular hexagon.
• Contains one regular 6-pointed star polygon with vertex angle of 60°.
• There are no non-regular reflective pairs and one tile with no mirror image.
• The tiling satisfies the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 91 polygons.

1. Plate 57 (bottom right) (Friday mosque, Varamin, Iran. Spandrels above an arch in the main prayer ivan) of Sonia P, Seherr-Thoss. Design and color in Islamic architecture; Afghanistan, Iran, Turkey, Smithsonian Institution, 1968. [seherr] {312p}

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