Geometric Model by A. Harry Wheeler, Tetrahemihexahedron or Heptahedron, One-Sided Polyhedron


This clear plastic in the shape of a regular octahedron but has four alternating faces removed and replaced by inward-facing triangular pyramids. It is a one-sided polyhedron.

Wenninger calls this surface a tetrahemihexahedron, Wheeler called it a heptahedron..

Compare 1979.0102.175, 1979.0102.176, 1979.0102.177, 1979.0102.190, 1979.0102.203, 1979.0102.272, 1979.0102.304, MA.304723.366, MA.304723.380, MA.304723.387, and MA.304723.419.


Magnus J. Wenninger, Polyhedron Models, Cambridge: The University Press, 1971, p. 101.

A.H. Wheeler, Catalog of Models, A. H. Wheeler Papers, Mathematics Collections, National Museum of American History.

Maker: Wheeler, Albert Harry

Location: Currently not on view

Place Made: United States: Massachusetts, Worcester

Subject: Mathematics


See more items in: Medicine and Science: Mathematics


Exhibition Location:

Credit Line: Gift of Louise D. Campbell

Data Source: National Museum of American History

Id Number: 1979.0102.190Accession Number: 1979.0102Catalog Number: 1979.0102.190

Object Name: Geometric Model

Physical Description: plastic (overall material)Measurements: overall: 5 cm x 3.6 cm x 3.6 cm; 1 31/32 in x 1 13/32 in x 1 13/32 in


Record Id: nmah_904932

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