How to sign: the trace of a point whose direction of motion changes
Similiar / Same: curve
Categories: line
Within this category: arc, arch, bell, bend, bow, catenary, closed curve, crescent, Cupid's bow, envelope, extrados, gooseneck, helix, hook, intrados, meander, normal curve, perversion, quadric, roulette, S-shape, scallop, sinuosity, spiral, wave