pyramid has either 4 or 5
A triangular pyramid.
A tetrahedron (4 faces) and an icosahedron (20).
Just one: a tetrahedron or triangular pyramid.
3d shapes with six faces are called hexahedra.
2 squares & 4 rectangles.
cylinder
There are infinitely many shapes that do.
Hexagonal prism has percandicular faces
ur maw
cylinder
A cube has 6 faces
There are an infinite number of 3d shapes with more than 20 faces.
Polyhedra (singular = polyhedron).