Bourgoin, Plate 137

• The symmetry group of the tiling is *632 (p6m).
• All the internal angles of the constituent polygons are a multiple of 1°.
• Contains one regular 12-pointed star polygon with vertex angle of 60°.
• Contains one regular 18-pointed star polygon with vertex angle of 44°.
• There are 8 non-regular reflective tiles and two reflective pairs.
• The tiling satisfies the interlace condition and has no finite interlace and one infinite interlace.
• The tiling is edge-to-edge.
• As drawn, contains about 724 polygons.

• Page 179 from [abas]
• Plate 137 (No colour) from [bourgoin]
• Figure 142 (Decorated door) from [clevenot]
• Vol 2, Figure 129 (Cairo: madrasa & Khanqa al-Azahr Barquq) from [wahhab]

• Wade photo BOU 137

• Stars with 18 points
• Tilings not constructible by straightedge and compass

v22