Question

Which of the following also describes a tetrahedron?

a. regular prism
b. regular pyramid
c. regular polygon
d. a cube ...?

Answer 1

B. A regular pyramid is a tetrahedron, because it is composed of four triangles, has six straight edges, and four vertex corners.

Answer 2

A tetrahedron is also called a regular triangular pyramid.

option b is the correct answer.