Bourgoin, Plate 166

• The symmetry group of the tiling is 2*22 (cmm).
• All the internal angles of the constituent polygons are a multiple of 12.85 (π/14)°.
• Contains two regular heptagons.
• Contains one regular 14-pointed star polygon with vertex angle of 51.42 (2π/7)°.
• There are 7 non-regular reflective tiles and two tiles with no mirror image.
• The tiling satisfies the interlace condition and has no finite interlace and three infinite interlaces.
• The tiling is edge-to-edge.
• As drawn, contains about 457 polygons.

• Vol 2, Figure 151 (Cairo: minbar, mosque 'Abd al-Gani al-Fakhri, Egypt) from [wahhab]
• Thesaurus Islamicus M2270 (al-Rifa'l, Qibla wall, window in south side, Cairo, Egypt) from [pc]
• Thesaurus Islamicus M178 (Jamali Yusuf, Qibla wall, minbar, Cairo, Egypt) from [pc]
• Plate 166 from [bourgoin]

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• Wade photo BOU 166
• Wade photo EGY 1029

• Tilings not constructible by straightedge and compass

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