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A pyramid is a polyhedron with a polygonal base (with n sides) and n triangular faces, attached to each edge of the base, which meet at a point (the apex) above the base.
A geometric figure with a polygonal base and triangular sides is called a pyramid.
A pyramid is a generic term for a 3-D polyhedron which has a polygonal base and triangular lateral faces that meet at an apex above the base. If the polygonal base has n sides, the pyramid has n+1 faces, n+1 vertices and 2n edges. A pyramid can, therefore have 4 or more vertices. So, there is bound to be a pyramid that will have the same number of vertices as a triangular prism (6).
A pyramid is a 3 dimensional object with a polygonal base (with n sides) and n triangular faces meeting at an apex above the base.
A tetrahedron.