al-Qadi Yahya mosque

• The symmetry group of the tiling is *632 (p6m).
• All the internal angles of the constituent polygons are a multiple of 1.07 (π/168)°.
• Contains one regular 6-pointed star polygon with vertex angle of 102.85 (4π/7)°.
• Contains one regular 7-pointed star polygon with vertex angle of 77.14 (3π/7)°.
• There are 7 non-regular reflective tiles (including one kite).
• The tiling satisfies the interlace condition and has three finite interlaces and no infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 341 polygons.

1. Page 175, Fig 6,21 (Mausoleum of Imam Yahyia, Mosul, Iraq) of Eric Broug. Islamic Geometric Design, Thames and Hudson, 2013. ISBN 978050051695. [broug2] {Many excellent photos}(1239-40AD, 636-7AH)
2. Photo from Thesaurus Islamicus (al-Qadi Yahya, Cairo, Egypt) of Not specific. Personal Communication, Information sent to the author, 21c. [pc] (1449AD, 853AH)

• Tilings not constructible by straightedge and compass

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