Shir Dar madrasah, Samarkand

• The symmetry group of the tiling is 2*22 (cmm).
• All the internal angles of the constituent polygons are a multiple of 18°.
• Contains one regular five-pointed star polygon with vertex angle of 72°.
• Contains one regular 10-pointed star polygon with vertex angle of 108°.
• There are five non-regular reflective tiles.
• 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 290 polygons.

1. Photo by David Wade: TRA 0409 (Shir Dar madrasah, Samarkand, Central Asia) from [wadei] (1636AD, 1045AH)
2. Fig 12.7c from [ww]
3. Figure 27 (Ten-fold motif of Type VIII) from [lee]
4. Leather Roll(4) from [akber]

• Wade photo TRA 0409
• Wade photo MA 044

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