Question

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

Explanation:

Step1: Recall polyhedron definition

A polyhedron is a three - dimensional solid with flat polygonal faces, straight edges and sharp vertices.

Step2: Analyze each option

• A polygon is a two - dimensional shape, not a polyhedron.
• A prism is a polyhedron with two congruent and parallel polygonal bases and rectangular (or parallelogram - shaped) lateral faces.
• A pyramid is a polyhedron with a polygonal base and triangular faces that meet at a single vertex.
• A cone has a curved surface and is not a polyhedron as it does not have flat polygonal faces only.

Answer:

B. Prism, C. Pyramid