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It has five. 5 * * * * * A square or qurdilateral pyramid does, indeed, have 5 faces but a triangular pyramid - better known as a TETRAHEDRON - has 4.
If you mean the base has 4 sides then the pyramid is a square based pyramid and has 5 corners. If you mean the pyramid has 4 faces then the pyramid is a tetrahedron with a triangular base and has 4 corners.
Square pyramid : 5 vertices. Triangular pyramid : 4 vertices.
4 For a pyramid with a triangle base- 4 vertices (plural of vertex) For a pyramid with a square base- 5 vertices
Depends what kind of pyramid. Triangular = 4 Square = 5