Instead of telling you the answer, think: What does it mean to have the pyramidal Shape?
Hint: There are many many cases, but only the "base" is changing, the side is always the same shape.
This 3D shape could be a square based pyramid.
Triangular.A pyramid has triangular faces
A pyramid shape, by default, has a square base. It therefore has 5 faces.
Triangular Pyramid......... The faces are Triangular....
The faces of a pyramid are typically triangular, with the exception of the base, which is usually a polygon (often a square or rectangle). Each triangular face connects the apex (top point) of the pyramid to the edges of the base. In a regular pyramid, all triangular faces are congruent, while in irregular pyramids, they can vary in shape and size.
A shape that has some triangular faces is a pyramid.
All except the base are always triangles; the shape of the base gives the name to the pyramid; eg a pentagonal pyramid has a pentagon as the base and five triangular faces; a triangular pyramid has three triangular faces and also has a triangle for the base.
Pyramid
Pyramid
A pyramid!
The shape of the base of a pyramid directly determines the number of triangular faces it has. Specifically, if the base is a polygon with ( n ) sides, the pyramid will have ( n ) triangular faces that connect each vertex of the base to the apex (top point) of the pyramid. Additionally, the pyramid itself counts as one more face, which is the base. Therefore, the total number of faces on the pyramid is ( n + 1 ).
pyramid