rectangular prism
The simplest such shape is PYRAMID.
A cube, rectangular prism, or pyramid.
A regular tetrahedron (triangular pyramid).
A cube is one of them
rectangular prism
The simplest such shape is PYRAMID.
There is no 3-d shape with 4 and 1 = 5 triangular faces.
It is a tetrahedron which is a triangular based pyramid
No 3D shape with FLAT SIDES has exactly 3 faces. 4 is the minimum.
That 3D shape is called triangular pyramid.
it is a strong inadiquate word that describes a 3d shape. A tetrahedron.
A cube, rectangular prism, or pyramid.
A triangular pyramid.
triangular pyramid
Tetrahedron. Follow the link and have a look at some 3D geometry.
A regular tetrahedron (triangular pyramid).