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.
• The tiling satisfies the interlace condition and has two finite interlaces and no infinite interlace.
• The tiling is edge-to-edge.
• As drawn, contains about 548 polygons.

• Page 281 from [abas]
• Plate 83 from [bourgoin]
• Vol 2, Plate 226 (Cairo: minbar of Qijmas al-Ishaqi mosque) from [creswell]
• Plate III, Figure 182 (Mosque of Sultan Kait Bey, Cairo) from [gluck]
• Thesaurus Islamicus Foundation F6761 (Cairo: kursi in prayer hall, al-Rifa'i mosque) from [pc]

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• Wade photo BOU 083

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