Geometric Folding Algorithms: linkages, origami, polyhedra by Erik Demaine and Joseph O'Rourke is a math textbook published in 2007. It's a somewhat formal-grandfatherly version of the 2011 book How to Fold It, with similar coverage and style. Both authors are professors of computer science, Demaine at MIT, O'Rourke at Smith College. Particularly fascinating are the discussions of how hard various computational geometry problems are to solve in the complexity hierarchy.

_{(cf How to Fold It (2024-05-18), ...) - ^z - 2024-05-18}