Bourgoin, Plate 9

• The symmetry group of the tiling is 632 (p6).
• All the internal angles of the constituent polygons are a multiple of 30°.
• Contains one regular 6-pointed star polygon with vertex angle of 60°.
• There are no non-regular reflective pairs and one tile with no mirror image.
• The tiling does not satisfy the two-colour condition.
• The tiling is not edge-to-edge.
• As drawn, contains about 95 polygons.

1. E.3839:102-1938 (Cairo, Egypt, Sketchbook by James Wild) from [vami]
2. Page 111 from [critchlow]
3. Page 24(4) from [wade]
4. Photo on Thesaurus Islamicus (Azbak al-Yusufi, Cairo, Egypt. Lintel of door, north wall of west iwan) from [pc]
5. Plate 9 from [bourgoin]
6. Similar pattern on page 354 from [abas]

• Wade photo BOU 009
• V&A record Sketchbook

v54