Isfahan, Chehel Sotoun palace (taken from Qotbieh mosque)

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 2°.
• Contains one regular four-pointed star polygon with vertex angle of 126°.
• Contains one regular four-pointed star polygon with vertex angle of 68°.
• There are three non-regular reflective tiles.
• The tiling does not satisfy the two-colour condition.
• The tiling is not edge-to-edge.
• As drawn, contains about 272 polygons.

1. Vol 2, page 96 (Chehel Sotoun Palace, Isfahan, Iran. From right hand part of the lettering (taken from Qotbieh mosque)) of Mahmood Maher al-Naqsh. Design and execution of drawing in Iranian tilework, Islamic period, Reza Abbasi Museum, 1983. [iran] {Good collection of Iranian patterns, text in Persian} Available on Internet.

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