pentagon
the flat surfaces of a solid figure are the
One of the figure which has no flat surface is Sphere.
A SPHERE has no vertices and no FLAT surfaces
A sphere.
5 flat surfaces.
There are 5 flat surfaces.
5 Flat surfaces 4 flat surfaces (3 for the sides and 1 for the base).
cylinder
A cube
A cylinder
A face is the flat surface on a solid figure. For example, a triangular prism has five flat surfaces and therefore five faces.