Either no verticals or two verticals and two horizontals.
If 8 verticals is meant to be 8 vertices (not the same thing), the answer is a parallelepiped. Special cases = a cuboid or a cube.
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
There need not be any.
4
how many sides does a cross has
There are two triangles in three verticals. This is used in math.