Question

Which are prisms among the following?

• A. Nail
• B. Unsharpened pencil
• C. A box
• D. A table calendar

Answer 1

Answer: (B), (C), (D)

A table calendar

A prism is a solid geometric figure whose two ends are congruent and parallel rectilinear figures and whose sides are parallelograms.
Usually unsharpened pencil has two hexagonal ends and six lateral faces. A box has two rectangular ends and four lateral faces. A table calendar has two triangular ends and three lateral faces. So, these three are examples of the prism.