Brick panel from Madrasat al-Mustansiryya, Baghdad

• The symmetry group of the tiling is 2*22 (cmm).
• All the internal angles of the constituent polygons are a multiple of 18°.
• Contains five regular two-pointed star polygons with vertex angle of 72°.
• Contains one regular pentagon.
• Contains one regular 10-pointed star polygon with vertex angle of 108°.
• There are five non-regular reflective tiles (including 2 kites).
• The tiling satisfies the interlace condition and has two finite interlaces and no infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 303 polygons.

1. Photo from David Wade (Madrasah al-Mustansiryya, Baghdad, Iraq. Brick panel, colour added, traditional star) of Not specific. Personal Communication, Information sent to the author, 21c. [pc] (1227AD, 623AH)
2. Page 328, Fig. 232j (Imam Awn al-Din Meshhad, Mosul, Iraq) of Jay Bonner. Islamic Geometric Patterns, Springer, 2016. ISBN 978144190216. [bonner] {Largest Islamic tile collection in print}(1248AD, 645AH)

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