David Collection door panel

• The symmetry group of the tiling is 2*22 (cmm).
• All the internal angles of the constituent polygons are a multiple of 36°.
• Contains 26 regular pentagons.
• Contains two regular 10-pointed star polygons with vertex angle of 108°.
• There are three non-regular reflective tiles (including one kite).
• The tiling satisfies the interlace condition and has four finite interlaces and two infinite interlaces with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 553 polygons.

1. Figure 41, 35/2000, main panel on back (No location, Iran. ivory, wood and brass door panel) of Sheila Blair. Cosmophilia: Islamic art from the David Collection, Chestnut Hill, MA, 2006. ISBN 978189285011. [blair] {216p}(17th century AD)
2. Flickr photo (Kok Gumbaz Mosque and Dorut Tilyovat Complex, Shakhrisabz, Central Asia) of Not specific. Personal Communication, Information sent to the author, 21c. [pc]

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