Bourgoin, Plate 83

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 7.5°.
• Contains three squares.
• Contains one regular octagon.
• Contains one regular 12-pointed star polygon with vertex angle of 60°.
• There are 7 non-regular reflective tiles (including one kite).
• The tiling satisfies the interlace condition and has two finite interlaces and no infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 651 polygons.

1. Vol 2, Plate 226 (Amir Qijmas al-Ishaqi, Cairo, Egypt. minbar) from [creswell] (1479-81AD, 884-6AH)
2. Page 222 (Azbak al-Yusufi, Cairo, Egypt. Minbar) from [okane2] (1494-5AD, 899-900AH)
3. Thesaurus Islamicus Foundation F6761 (al-Rifa'i mosque, Cairo, Egypt. kursi in prayer hall) from [pc] (1869-1910AD, 1286-1328AH)
4. Fig 11.6b photo from [ww]
5. Page 281 from [abas]
6. Plate 83 from [bourgoin]
7. Plate III, Figure 182 (Qaytbay, Cairo, Egypt) from [gluck]

• Wade photo BOU 083

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