### Video Transcript

For the figure below, identify the
shape of the bases or base. Then classify the figure.

Here we can see the base is at the
bottom. Now this isn’t always the case but
usually the polyhedron sits on the base. And what is a polyhedron? It’s a solid with a flat surface
that are polygons.

So here we can see that our base is
the shape of a rectangle. Now we need to decide if this is a
rectangular prism or a rectangular pyramid. A prism is a polyhedron with two
parallel congruent faces called basis, whereas a pyramid is a polyhedron with one
base that is a polygon and faces that are triangles.

Here we can see that we have one
base and the rest are triangular faces. That means we have a pyramid. Therefore, this is a rectangular
pyramid. Therefore, the shape of the base is
a rectangle, and the figure is a rectangular pyramid.