Friday mosque, Yazd

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 15°.
• Contains one regular 8-pointed star polygon with vertex angle of 75°.
• Contains one regular 12-pointed star polygon with vertex angle of 90°.
• There are 6 non-regular reflective tiles and one reflective pair.
• The tiling satisfies the interlace condition and has three finite interlaces and no infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 555 polygons.

1. Photo by David Wade: IRA 1907 (Friday mosque, Yazd, Iran) of David Wade. Website: patterninislamicart.com, UK, 2015. [wadei] {Website}(1325AD, 725AH)

• Wade photo IRA 1907

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