Bourgoin, Plate 94

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 30°.
• Contains three equilateral triangles.
• Contains one regular four-pointed star polygon with vertex angle of 60°.
• Contains one regular four-pointed star polygon with vertex angle of 120°.
• Contains one regular 12-pointed star polygon with vertex angle of 90°.
• There are four 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 522 polygons.

• Vol 1, Plate 30 (Cairo: side of minbar, mosque of As-Salih Tala'i, Egypt) from [creswell]
• Figure 248 (Turkey: Bursa, Muradiye, tomb of Sultan Murad II, eaves of porch) from [aslanapa]
• Internet photo 294 (Cairo: side of minbar, mosque of As-Salih Tala'i), Egypt) from [d-avennes]
• National Library of Cairo, 1334 (Egypt) from [pc]
• Page 99 (The Tomb of Bibi Jawindi) from [broug]
• Plate 94 (The 12-sided figure does not have rotational symmetry) from [bourgoin]
• Page 279 from [abas]
• Figure 76b from [elsaid]

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• Wade photo EGY 1527
• Wade photo BOU 094

• Tiling with star polygons with 12 points whose vertex angle is 90°

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