Dye, Figure D 20a
 
 
 
 
 
 
 data23/D20A
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Geometry
 
 
-  The symmetry group of the tiling is *4.0• (d4.0).
 -  All the internal angles of the constituent polygons are a multiple of 45°.
 -  Contains two squares.
 -  There is one non-regular reflective tile and one reflective pair.
 -  The tiling is not edge-to-edge.
 -  As drawn, contains about 114 polygons.
 
 
 
 
References
 
 
Publications referenced: 
 
 
-  Figure D 20a (Fourfold Square Man-Character Screen, Residence, Chengtu, Szechwan, 1875 AD)  of Daniel Sheets Dye. Chinese Lattice Designs, Dover,	1937.	ISBN 048623096.  [dye]  {Important book topic.}
 
 
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