Description: Sal identifies the following 3D shapes: square pyramid, rectangular prism, triangular prism, cylinder, and cone. What I want you to do is pause this video and think about which of these shapes is a square pyramid. First, let's think about which one is the square pyramid. This shape here on the right clearly looks like a pyramid, and the thing that makes it a square pyramid is the idea that its base is a square.*Teacher Advisor is 100% free.