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 three-pointed star polygon with vertex angle of 105°.
• Contains one regular 6-pointed star polygon with vertex angle of 75°.
• There are five non-regular reflective tiles (including 2 kites).
• The tiling does not satisfy the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 477 polygons.

1. Photo from Richard Henry (Friday mosque, Isfahan, Iran. Stone screen) of Not specific. Personal Communication, Information sent to the author, 21c. [pc]

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