Bourgoin, Plate 169

• The symmetry group of the tiling is 2*22 (cmm).
• All the internal angles of the constituent polygons are a multiple of 25.71 (π/7)°.
• Contains two regular heptagons.
• Contains one regular 14-pointed star polygon with vertex angle of 51.42 (2π/7)°.
• There are 13 non-regular reflective tiles and two reflective pairs.
• The tiling satisfies the interlace condition and has one finite interlace and four infinite interlaces.
• The tiling is edge-to-edge.
• As drawn, contains about 433 polygons.

• Page 317 from [abas]
• Plate 169 from [bourgoin]
• Photo from David Wade (Mosque of al-Muyyad, Cairo) from [pc]

Click here to display all references

Hide extra references

• Wade photo BOU 169
• Wade photo EGY 1217

• Tiling with star polygons with 14 points
• Tilings not constructible by straightedge and compass

v23