An elongated bipyramid is a type of convex polyhedron that can be classified as a member of the family of bipyramids. It is formed by taking a regular polygon and adding two additional vertices that are positioned along the axis perpendicular to the polygon's plane. This elongates the resulting bipyramid compared to a standard bipyramid, which has two identical bases and equally spaced apex points above and below the center of the base.
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