Question

which figure is a rectangular pyramid?

Explanation:

A rectangular pyramid has a rectangular base and triangular faces meeting at a single vertex (apex). Let's analyze each figure:

• Top - left: Has a rectangular (or quadrilateral) base and triangular lateral faces, matching the definition of a rectangular pyramid.
• Top - right: Has a triangular base (a tetrahedron or triangular pyramid), not rectangular.
• Bottom - left: Is a rectangular prism (all faces are rectangles, no apex), not a pyramid.
• Bottom - right: Is a triangular prism (has two triangular bases and rectangular lateral faces), not a pyramid.

Answer:

The top - left figure (the one with a rectangular base and triangular lateral faces meeting at an apex) is a rectangular pyramid.