Geometric Model by A. Harry Wheeler, Deltahedron (Third Stellation of the Icosahedron)


Polyhedra in which all faces are equilateral triangles are called deltahedra. The regular tetrahedron, octahedron, and icosahedron are the simplest deltahedra. It also is possible to replace each face of a regular dodecahedron with a “dimple” having five equilateral triangles as sides. This is a model of such a surface. It also may be considered as one of the polyhedra formed by extending the sides of—or stellating—a regular icosahedron.

This deltahedron is folded from paper and held together entirely by hinged folds along the edges. A mark reads: 12-21-26 (/)A.

Compare MA.304723.038, MA.304723.214, MA.304723.224, and MA.304723.308.


Magnus J. Wenninger, Polyhedron Models, Cambridge: The University Press, 1971, p. 48.

Date Made: 1926 12 21

Maker: Wheeler, Albert Harry

Location: Currently not on view

Place Made: United States: Massachusetts, WorcesterAssociated Place: United States: Massachusetts, Worcester

Subject: Mathematics


See more items in: Medicine and Science: Mathematics, Science & Mathematics


Exhibition Location:

Credit Line: Gift of Helen M. Wheeler

Data Source: National Museum of American History

Id Number: MA.304723.038Accession Number: 304723Catalog Number: 304723.038

Object Name: Geometric Model

Physical Description: paper (overall material)tan (overall color)cut and glued (overall production method/technique)Measurements: average spatial: 7 cm x 7 cm x 7 cm; 2 3/4 in x 2 3/4 in x 2 3/4 in


Record Id: nmah_1064848

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