What is Euler's formula for polyhedra (VVV=vertices, EEE=edges, FFF=faces)?
V+E−F=2V + E - F = 2V+E−F=2
V−E+F=2V - E + F = 2V−E+F=2
V+F=EV + F = EV+F=E
E−V+F=1E - V + F = 1E−V+F=1