Bourgoin, Plate 1

Extremely common throughout Islam. Early sources are: Ibn Tulun mosque (876-79) at Cairo. Madinat al-Zahra palace (936-76) near Cordoba in Spain

• The symmetry group of the tiling is 632 (p6).
• All the internal angles of the constituent polygons are a multiple of 60°.
• Contains one regular hexagon.
• Contains one regular 6-pointed star polygon with vertex angle of 60°.
• There are no non-regular reflective pairs and one tile with no mirror image.
• The tiling does not satisfy the two-colour condition.
• The tiling is not edge-to-edge.
• As drawn, contains about 98 polygons.

1. Page 347 (Figure 7.2.5 (b) which is homeomeric but not diffeomeric) from [gands]
2. Page 81 (d) from [wade]
3. Photo by David Wade: EGY 1025 (al-Husayn, Cairo, Egypt) from [wadei]
4. Photo by David Wade: EGY 1615 (al-Maridani, Cairo, Egypt) from [wadei]
5. Plate 1 (Interlacing ignored in assigning the symmetry, so reflections appear here!) from [bourgoin]

• Wade photo EGY 1615
• Wade photo EGY 1025
• Wade photo PIA 081

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