Because its base is a square.
It is just called a square pyramid, but its not square. Its only square on the bottom, so they call it a square pyramid, or you can simply just call it a pyramid because a pyramid is a pyramid.
It is simply called a square based pyramid
A square based pyramid is a 3-d object. It does not have a 2-d name!
It is a square based pyramid. And the word is which, not witch!
A square based pyramid is the best name. It is a pentahedron, but that could also refer to a pyramid on any quadrilateral base and so the name is far less informative.
A 2D representation of a square-based pyramid is called a square pyramid net or a square pyramid template.
A square pyramid's base is a square. You can tell by the name (for exp. a triangular pyramid's base is a triangle.) Good luck with whatever you need it for :)
4 triangles and 1 square
Square pyramid
A square pyramid is a pyramid whose base is in the shape of a square.
A square based pyramid is called a square pyramid
The base of a square pyramid is a square. The pyramid has 4 faces making the base have four edges. SQUARE PYRAMID