Reference

https://paulbourke.net/geometry/tilingplane/ https://genuary.art/prompts#jan17 https://en.wikipedia.org/wiki/List_of_planar_symmetry_groups https://tiled.art/en/symmetryClassification/ https://en.wikipedia.org/wiki/Wallpaper_group#Group_p4mm https://momath.org/the-hat/ https://mathworld.wolfram.com/PenroseTiles.html https://en.wikipedia.org/wiki/Truchet_tile https://en.wikipedia.org/wiki/Wallpaper_group#/media/File:Wallpaper_group-p4m-5.jpg/2