Topkapi Scroll, page 308, Figure 41

• The symmetry group of the tiling is 442 (p4).
• All the internal angles of the constituent polygons are a multiple of 22.5°.
• Contains two squares.
• Contains one regular two-pointed star polygon with vertex angle of 45°.
• 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 edge-to-edge.
• As drawn, contains about 164 polygons.

1. Page 308, Figure 41 (Topkapi scroll, Istanbul, Turkey) of Gülru Necipoğlu. The Topkapı scroll : geometry and ornament in Islamic architecture, The Getty Center for the History of Art and the Humanities, 1995. ISBN 089236335. [necipoglu] {Beautiful publication.}

• Wade photo TS 021

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