Western tomb tower, Kharraqan

• The symmetry group of the tiling is 3*3 (p31m).
• All the internal angles of the constituent polygons are a multiple of 60°.
• There is one non-regular reflective tile.
• The tiling does not satisfy the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 73 polygons.

1. Figure 4.20 and Photo 4.15 (Western tomb tower, Kharraqan, Iran) from [abas] (1093AD, 485AH)
2. Figure 51, Plate 28 (Western tomb tower, Kharraqan, Iran) from [elsaid] (1093AD, 485AH)
3. Figure 559 (Western tomb tower, Kharraqan, Iran) from [hill] (1093AD, 485AH)
4. (Gunbad-i Alaviyyan, Hamadan, Iran) from [pc]

Photo?

v54