Qartawiyya madrasah, Tripoli

• The symmetry group of the tiling is *632 (p6m).
• All the internal angles of the constituent polygons are a multiple of .5°.
• Contains one regular 12-pointed star polygon with vertex angle of 80°.
• Contains one regular 15-pointed star polygon with vertex angle of 51°.
• There are 11 non-regular reflective tiles (including 3 kites) and two reflective pairs.
• The tiling satisfies the interlace condition and has no finite interlace and three infinite interlaces with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 1761 polygons.

1. Page 423, Fig. 355d (Qartawiyya madrasah, Tripoli, Lebanon) of Jay Bonner. Islamic Geometric Patterns, Springer, 2016. ISBN 978144190216. [bonner] {Largest Islamic tile collection in print}(1316-26AD, 715-26AH)

Photo?

v54