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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 pyramid is a generic term used to describe a polyhedron with a polygonal base and a number of triangles rising from that base to meet at an apex. A pyramid whose base is a polygon with n-sides (or vertices) has n+1 faces, n+1 vertices and 2n edges, where n ≥ 3.
It has 2n edges: n of these form the n-gonal base. From each vertex of the base one edge (so another n in all) goes to the apex of the pyramid.
A pyramid with an n-sided base will have n + 1 vertices, n + 1 faces, and 2n edges. 8 edges
12 A pyramid with an n-sided base will have n + 1 vertices, n + 1 faces, and 2n edges.