Star Dipyramid

Consider an -pointed star. Elevate the center of the star polygon above and below the plane of the star to form a star dipyramid. Make two intersecting star dipyramids by rotating a copy of the original by 90 degrees. For , such a star polyhedron is at the top of the spire of a Lutheran church in the village of Felpéc, Hungary. In the case , such a star polyhedron can be seen at the top of some of the obelisks in Rome, for instance, in the Piazza San Pietro or in the Piazza del Popolo.

THINGS TO TRY

SNAPSHOTS

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