There need not be any.
pentagon
A pentagon need not have any vertical lines. It can have at most two.
how many vertices does a pentagonal cylinder have? how many vertices does a pentagonal cylinder have?
The hendecahedra has 5 verticals, 8 edges, and 5 faces.
Either no verticals or two verticals and two horizontals.
Verticals are corners so in a two dimensional a square has 4 verticals
3 angles 3 verticals
A tetrahedron need not have any verticals.
It does not!
Eight.
4
4