Bourgoin, Plate 182

• The symmetry group of the tiling is 2*22 (cmm).
• All the internal angles of the constituent polygons are a multiple of 36°.
• Contains 7 regular two-pointed star polygons with vertex angle of 72°.
• Contains three regular pentagons.
• Contains one regular 10-pointed star polygon with vertex angle of 72°.
• There are 8 non-regular reflective tiles (including one kite).
• The tiling satisfies the interlace condition and has five finite interlaces and no infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 493 polygons.

1. Page 239 (Qanibay al-Sayfi, Cairo, Egypt. Panel of minbar) from [okane2]   Variant B(1503AD, 908AH)
2. Photo by David Wade: EGY 1728 (al-Ghuri, Cairo, Egypt) from [wadei] (1503-5AD, 908-10AH)
3. Flickr photo (Sultan Ahmed Mosque, Istanbul, Turkey) from [pc]   Variant B  Variant A  Variant C(1609-16AD, 1018-25AH)
4. John Warburton-Lee Photography / Alamy (al-Rifa'i mosque, Cairo, Egypt. Detail of decoration on the minbar) from [pc]   Variant A(1869-1910AD, 1286-1328AH)
5. Thesaurus Islamicus Foundation F6886 (Shaykh Abu Shibak, Cairo, Egypt. Detail of south door of Mausoleum) from [pc]   Variant A(1869-1910AD, 1286-1328AH)
6. Thesaurus Islamicus Foundation (al-Rifa'i mosque, Cairo, Egypt. North wall of qibla riwaq, door leading to northeast mausoleum) from [pc] (1869-1910AD, 1286-1328AH)
7. E.3840:28-1938 (Cairo, Egypt. Sketchbook by James Wild) from [vami]
8. Page 42 (al-Azhar mosque, Cairo, Egypt. Mosaic wall decoration, 970-1753, ) from [hessemer]
9. Pages 97-99, reportedly widely used from [critchlow]
10. Plate 182 from [bourgoin]
11. Sale item at Christies (No location, Mamluk or early Ottoman period, Cairo, Egypt. A geometric polychrome marble mosaic panel, 15th-17th century) from [pc]   Variant C
12. Thesaurus Islamicus Foundation (al-Azhar mosque, Cairo, Egypt. Ottoman riwaqs, body of mihrab) from [pc]   Variant B

• Wade photo BOU 182
• Wade photo EGY 1728
• V&A record Sketchbook

• Patterns with variants

v54