Question

question 3 of 10
which of the following are polyhedrons?
check all that apply.
a. pyramid
b. prism
c. cone
d. polygon

Explanation:

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

• A pyramid has triangular faces (polygonal) and a polygonal base, so it is a polyhedron.
• A prism has two congruent polygonal bases and rectangular (polygonal) lateral faces, so it is a polyhedron.
• A cone has a curved surface, so it is not a polyhedron.
• A polygon is a 2 - D figure, not a 3 - D polyhedron.

Answer:

A. Pyramid, B. Prism