Topkapi Saray, Istanbul

• The symmetry group of the tiling is *2222 (pmm).
• All the internal angles of the constituent polygons are a multiple of 18°.
• Contains two regular five-pointed star polygons with vertex angle of 36°.
• Contains one regular 10-pointed star polygon with vertex angle of 72°.
• There are 6 non-regular reflective tiles.
• The tiling satisfies the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 249 polygons.

• Wade photo TUR 0212

• Tiling whose angles are a multiple of 18°

v29