Qal'ah-i-Bist, Afghanistan

• 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 36°.
• Contains one regular 10-pointed star polygon with vertex angle of 36°.
• There are two non-regular reflective tiles.
• The tiling satisfies the interlace condition and has no finite interlace and two infinite interlaces with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 173 polygons.

1. Figure 2.5.9 on page 88 from [gands]
2. Page 125 (Ali Qapu pavilion, Isfahan, Iran. No colouring, talar ceiling) from [scerrato]
3. Page 309 from [abas]
4. Page 88 (Generalife, Granada, Spain. According to Hargittai) from [wade]
5. Photo by David Wade: EGY 0520 (Amir Sarghatmish, Cairo, Egypt) from [wadei]
6. Photo from Miroslaw Majewski (Bostani Ali mosque, Istanbul, Turkey) from [pc]
7. Plate 34, Figure 65b (Qal'ah-i-Bist, Afghanistan, Central Asia) from [elsaid]
8. Plate 61 (Cathedral, Seville, Spain. Sacristy door to main altar) from [collin]
9. Plate 65 (Iran. dome of a mosque, faience mosaic) from [collin]

• Wade photo EGY 0520
• Wade photo EPC 076
• Wade photo EPC 081

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