Courtyard of Mustansiriyya Madrasa, Baghdad

• The symmetry group of the tiling is 2*22 (cmm).
• All the internal angles of the constituent polygons are a multiple of 45°.
• Contains one regular 8-pointed star polygon with vertex angle of 90°.
• There are three non-regular reflective tiles (including one kite) and one reflective pair.
• The tiling satisfies the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 103 polygons.

1. Page 163, Fig 5.101 under right arch (Mustansiriyya Madrasah, Baghdad, Iraq. Courtyard) of Eric Broug. Islamic Geometric Design, Thames and Hudson, 2013. ISBN 978050051695. [broug2] {Many excellent photos}
2. Page 324, Figure 67 (Topkapi scroll, Istanbul, Turkey) of Gülru Necipoğlu. The Topkapı scroll : geometry and ornament in Islamic architecture, The Getty Center for the History of Art and the Humanities, 1995. ISBN 089236335. [necipoglu] {Beautiful publication.}

• Wade photo TS 037

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