The museum is open Fridays through Tuesdays 11 a.m. to 4 p.m. Free timed-entry passes are required. Review our latest visitor safety guidelines.

Geometric Model by Harvey M. Allison, a Student of A. Harry Wheeler, Third Stellation of the Icosahedron

Geometric Model by Harvey M. Allison, a Student of A. Harry Wheeler, Third Stellation of the Icosahedron

<< >>
Usage conditions apply
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: I 26 (/) 387 A second mark reads: Harvey M. Allison (/) June 14, 1916.
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.
Currently not on view
Object Name
Geometric Model
date made
1916 06 14
associated dates
1916 06 14 / 1916 06 14
Wheeler, Albert Harry
Allison, Harvey M.
place made
United States: Massachusetts, Worcester
associated place
United States: Massachusetts, Worcester
Physical Description
paper (overall material)
tan (overall color)
cut and folded (overall production method/technique)
average spatial: 5.5 cm x 8.4 cm x 7.7 cm; 2 5/32 in x 3 5/16 in x 3 1/32 in
ID Number
accession number
catalog number
Credit Line
Gift of Helen M. Wheeler
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Data Source
National Museum of American History
Nominate this object for photography.   

Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.

If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.


Add a comment about this object