Explain the differences between solids that are polyhedra and solids that aren't polyhedra.

A polyhedron is a solid shape with flat sides, while a non polyhedron is a solid shape which has curved sides.

Step-by-step explanation:

A polyhedron, can be seen as a solid shape with many plane figures, forming its sides. Examples of polyhedrons are cuboids, squares and pyramids. As you can see, these solid shapes have flat sides.

On the other hand, a non polyhedron is a solid shape that has curved surfaces. Examples include: cones, spheres and cylinders.

Hence polyhedron: No curved surface

Non polyhedron: curved surface