Friday mosque, Isfahan

• The symmetry group of the tiling is *632 (p6m).
• All the internal angles of the constituent polygons are a multiple of 7.5°.
• Contains one regular hexagon.
• Contains one regular 12-pointed star polygon with vertex angle of 105°.
• There are three non-regular reflective tiles (including one kite).
• The tiling satisfies the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 281 polygons.

1. Photo by David Wade: IRA 0721 (Friday mosque, Isfahan, Iran) of David Wade. Website: patterninislamicart.com, UK, 2015. [wadei] {Website}
2. plate XIII (Friday mosque, Isfahan, Iran) of Arthur Upham Pope. Persian Architecture, Thames and Hudson, 1965. [pope] {Good source book, but weak on geometric tiling patterns}

• Wade photo IRA 0721

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