The
torus is a surface of revolution generated by a circumference that rotates
around an external axis. Tori can be “linked” in space, and in
toroidal polyhedra C+V=A+1 is satisfied as the Euler-Poincaré
characteristic is equal to 1. As a torus has a “hole”, the torus is
class 1.
What
curves are meridians and parallels in a torus?
