mathswithmuza on Instagram: "A Dupin cyclide is a beautifully symmetric surface from classical geometry that sits at the intersection of algebra, differential geometry, and visualization. What makes it special is that it can be generated by inversions of simpler shapes like tori, cylinders, or cones, which gives it a surprisingly rich structure despite its elegant definition. One of its most striking features is that it carries two families of circular curvature lines, meaning that if you trace