Samarkand Registan Square

• The symmetry group of the tiling is 2*22 (cmm).
• All the internal angles of the constituent polygons are a multiple of 36°.
• 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 three non-regular reflective tiles (including one kite).
• The tiling satisfies the interlace condition and has no finite interlace and three infinite interlaces with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 209 polygons.

1. Photo by David Wade: TRA 0411/0335 (Shir Dar madrasah, Samarkand, Central Asia) from [wadei] (1636AD, 1045AH)
2. Photo by David Wade: TRA 0417 (Tillya-Kari Madrasah, Samarkand, Central Asia) from [wadei] (1660AD, 1070AH)
3. Figure 22 (Central Asia. Common ornament to this area, ten-fold motifs of Type III) from [lee]
4. Flickr photo (Kok Gumbaz Mosque and Dorut Tilyovat Complex, Shakhrisabz, Central Asia) from [pc]
5. Photograph by Donald Bell (Registan Square, Samarkand, Central Asia) from [pc]

• Wade photo TRA 0335
• Wade photo TRA 0411
• Wade photo TRA 0417

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