Question

which of the following are polyhedrons? check all that apply. a. polygon b. prism c. pyramid d. cone

Explanation:

A polyhedron is a 3D solid with flat polygonal faces, straight edges, and sharp vertices.

• A polygon is a 2D shape, not a 3D solid, so it is not a polyhedron.
• A prism has two congruent polygonal bases and rectangular faces connecting them, fitting the polyhedron definition.
• A pyramid has a polygonal base and triangular faces meeting at a single vertex, fitting the polyhedron definition.
• A cone has a curved surface and circular base, so it is not a polyhedron.

Answer:

B. Prism
C. Pyramid