Which of the following are polyhedrons?

A-cone

B-polygon

C-prism

D-pyramid

C. Prism

D. Pyramid

Step-by-step explanation:

We know that:

Polyhedron is a solid in three dimensions with flat polygonal faces, straight edges and sharp corners or vertices. The word polyhedron comes from the Classical Greek word meaning many base. The faces of a polyhedron are polygons, which means they have straight sides. Cone is a three dimensional figure but cone is not a polyhedron since cone has curved surface and not flat faces. Polygon is not a polyhedron because it is not three dimensional. Prism and pyramids are polyhedron since they are three dimensional and have flat polygon faces.

The correct answers are: Prism, and Pyramid.