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.
• The tiling satisfies the interlace condition and has three finite interlaces and three infinite interlaces.
• The tiling is edge-to-edge.
• As drawn, contains about 455 polygons.

• Figure 41, 35/2000, main panel on back (17th century Iran, ivory, wood and brass) of Sheila Blair. Cosmophilia: Islamic art from the David Collection, Chestnut Hill, MA, 2006. ISBN 978189285011. [blair] {216p}

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