It is a polyhedron.
cube pyramid cylinder * * * * * 3-d objects with only flat surfaces (a different question) are polyhedra.
Like 3D. Looks like you can hold it. It's not flat
There can be no such shape. If there were a shape with n flat surfaces, then if you sliced off one vertex, you would have a shape with n+1 flat surfaces. So it is always possible to add one more flat surface.
Either a net or a face - it depends on what your question means.
Polyhedron (plural polyhedra)
A polyhedron.
It is a polyhedron.
In geometry, a circle is a two-dimensional object, so it does not have a surface. Only three-dimensional objects have surfaces. A disc is a flat, circular three-dimensional object.
A face.
Two. Considering this is a two-dimensional object, cut out of a piece of paper it would have two flat surfaces, the front and the back. If your talking a about a sphere, the three-dimensional object of a circle, it has no flat surfaces considering it is round.
A three dimensional shape bounded by plane (flat) faces is a polyhedron.
cube pyramid cylinder * * * * * 3-d objects with only flat surfaces (a different question) are polyhedra.
A net for the 3D shape.
SQUARE
net
A square