Sar Cheshmeh, Tehran

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 11.25°.
• Contains one regular two-pointed star polygon with vertex angle of 22.5°.
• Contains one regular four-pointed star polygon with vertex angle of 67.5° - composed of kites.
• Contains two regular 8-pointed star polygons with vertex angle of 90° - composed of kites.
• There are four non-regular reflective tiles (including 4 kites) and three reflective pairs.
• The tiling does not satisfy the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 568 polygons.

1. Page 41 (House of Ghavam al-Dowleh, Sar Cheshmeh, Tehran, Iran. Kucheh [alley], Mirza Mahmoud Vazir) of Javad Shafai. On decoration in Persian architecture and wood carving, Tehran, 1977. [shafai] {In Persian}

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