a cube
* * * * *
A cube is only one example. Any one of the five Platonic solids - tetrahedron, cube or hexahedron, octahedron, dodecahedron or icosahedron - are made up from congruent plane faces.
Chat with our AI personalities
There are several of these. For example, dice.See related link below for more shapes
There are many. All polyhedra have ONLY flat faces but many other shapes have flat faces such as a hemisphere or an octant or a cylinder.
It is a cuboid or a cube
A square based pyramid
The faces of a cube are all the same shape - a square.