Six faces
A 3D square is surely a cube? Therefore, a cube has 6 faces.
It has 4 faces
a hexagonal prism has 8 faces.
None.
4
1
6
There is no such thing as a 3d triangle. A 3d shape which has only equilateral triangular faces can be a tetrahedron which has 4 faces or an icosahedron which has 20.
10 * * * * * Polyhedra are named according to the number of faces that they have. So a 3d dodecagon, called a dodecahedron would have 12 faces.
A cube has 6 faces
6 faces, 12 edges