Bourgoin, Plate 15 (top)

• The symmetry group of the tiling is *632 (p6m).
• All the internal angles of the constituent polygons are a multiple of 30°.
• Contains one regular three-pointed star polygon with vertex angle of 90°.
• Contains one regular 6-pointed star polygon with vertex angle of 90°.
• The tiling satisfies the interlace condition and has no finite interlace and one infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 89 polygons.

1. Figure 20 (Alaaddin Mosque, Konya, Turkey. Minbar) from [aslanapa] (1155AD, 549AH)
2. Figure 87 (Sultan Han, Konya, Turkey) from [aslanapa] (1229AD, 626AH)
3. Fig 11.8a from [ww]
4. Page 15 (top) from [bourgoin]
5. Page 153 (Angles can be varied) from [abas]
6. Page 501, Figure 14 (Drawn with up/down interlacing) from [calvert]

• Wade photo BOU 015

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v54