To study solid objects whose faces are all polygons.
polyhedrons need flat face and edges, corners which cylinder cones don't have.
polyhedrons need flat face and edges, corners which cylinder cones don't have.
A prism is a polyhedron.
No. Polyhedrons are any shape with multiple sides. A triangle and a prism are just two different kinds of polyhedrons.
Yes, an empty box is and No, polyhedrons don't have to be.
False. Cylinders and cones are not just polyhedrons with circular bases.
not all, but some
not all
Polyhedrons
Cone, cylinder.
tetrahedrons
no because it has curved faces.