Model of a Small Stellated Dodecahedron

Model of a Small Stellated Dodecahedron

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Description
This model of a small stellated dodecahedron is made of metal painted gray. A rod from one of the vertices extends down to a round wooden stand painted black. No maker's marks are on the model or the base.
This polyhedron has twelve identical faces that are intersecting pentagrams produced by extending the edges of the faces of a regular dodecahedron. The twelve vertices are also identical. The surface is one of two first described by Johannes Kepler in 1619, and now known as a Kepler-Poinsot solid.
Plastic and paper versions of this surface, made by A. Harry Wheeler and his students, are also in the NMAH collections.
Compare models MA.304723.26, MA.304722.27, and MA.304722.28.
Reference:
H. M. Cundy and A. P. Rollet, Mathematical Models, Oxford: The Clarendon Press, 1961.
Location
Currently not on view
Object Name
Geometric Model
geometric model
Physical Description
wood (overall material)
metal (overall material)
Measurements
overall: 31 cm x 16 cm x 16 cm; 12 7/32 in x 6 5/16 in x 6 5/16 in
ID Number
MA.304722.26
catalog number
304722.26
accession number
304722
Credit Line
Gift of Brown University Department of Mathematics
subject
Mathematics
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Data Source
National Museum of American History
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