Faces on solid figures are like when you look at a square you see a flat wall type surface.
Tetrahedron, Pentahedron,Hexahedron,Heptahedron,Octahedron.
There is no faces because it is not flat.
a sphere
cube
Solid figures are normally named after their number of faces.
A square or rectanglular pyramid are the only solid figures that have exactly five faces.
it is the property of solid crystal that they have straight edges and flat faces.
A polyhedron
A tetrahedron.
a polyhedron
a sphere