Square Pyramid
The figure is a pyramid and the base is a square.
There is a contradiction in your question. If the base has four equal sides then is it a square so not all the faces are Triangles. However if the base is a square and the rest of the faces are triangles then your object is a "Square-based Pyramid"
A pyramid
A square based pyramid.
a square pyramid (i found it in my sons math book !)
pyramid. Base is a square, but each of the 4 sides is a triangle.
A pyramid with a square base.
A square pyramid has a square base and four congruent triangular faces.
Not necessarily. The solid could be a square based cuboid (hexahedron).
A right, square based pyramid.A right, square based pyramid.A right, square based pyramid.A right, square based pyramid.
5 faces
that depends, if it has a square base, it has four faces. but if it has a triangular base, it has three faces.