A 3d shape with 5 faces can be a square pyramid
There is no such 3-d shape if it also has flat faces.
A pyramid
A square-based pyramid.
There are two 3D shapes with five faces: Triangular prisms and rectangular pyramids.
A 3d shape with 5 faces can be a square pyramid
pyramid
It cannot be a simply connected 3d shape because it does not satisfy the Euler characteristic.
ADDER
mommy ?
There is no such 3-d shape if it also has flat faces.
cube
cube
A pyramid
Pentehedron
A square-based pyramid.
Onion.