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A square based pyramid has 4 triangular faces.
Two. 4 faces are triangles and the base is a square.
A square pyramid has one base, and it is a square. That's why it's called a square pyramid. And because the base is a square, it has four sides.
One, though it's technically a square - hence why it is called a square pyramid. By definition, a square pyramid has one square face. It also has four triangular faces which meet at the apex (the tip) of the pyramid.
there are 4 triangles and 1 rectangle in an rectangular pyramid