No 3D shape with FLAT SIDES has exactly 3 faces. 4 is the minimum.
Triangular pyramid
triangular pyramid
A cuboid.
A rhombus is a plane (flat) figure so it has no faces. It has 4 edges and four vertices
A square based pyramid
A pyramid has 4 flat faces, all of which are triangular. Don't confuse this with a square-based pyramid like those in Egypt, as they have 5 faces.
Such a shape does not exits. See the attached link for all 3d shapes with 6 plane faces.
A flat square has 4 faces.
It has 4 faces
be more specific. do you mean a 3-D figure? in that case, it would be a triangular pyramid.
4