Have a look at hyperbolic crochet as well https://en.wikipedia.org/wiki/Daina_Taimi%C5%86a https://en.wikipedia.org/wiki/Daina_Taimi%C5%86a https://pi.math.co

Have a look at hyperbolic crochet as well https://en.wikipedia.org/wiki/Daina_Taimi%C5%86a https://en.wikipedia.org/wiki/Daina_Taimi%C5%86a https://pi.math.cornell.edu/~dtaimina/crochet/hplane.htm https://pi.math.cornell.edu/~dtaimina/crochet/hplane.htm https://www.routledge.com/Crocheting-Adventures-with-Hyperbolic-Planes-Tactile-Mathematics-Art-and-Craft-for-all-to-Explore-Second-Edition/Taimina/p/book/9780367375072 https://www.routledge.com/Crocheting-Adventures-with-Hyperbo...