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

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

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This cut and glued pink plastic model is in the shape of a triangular pyramid. However, there are three-sided indentations along each of the three side edges, with two triangles along the sides and a quadrilateral at the top of each indentation. These quadrilaterals form the bottom of a hexagon that tops the model. The bottom of the model is not flat, but rather a lower triangular pyramid with the same base. The sides of this pyramid contain the triangular sides of the indentations. A mark reads: 650. Wheeler classified this model among his one-sided polyhedra. counting it six vertices, fifteen edges, and ten faces for e – k + f = 1.
Models MA.304723.378 and MA.304723.362 have the same shape. Models MA.304723.377 and MA.304723.401 have the same shape. Models MA.304723.378 and MA.304723.401 are both marked 650. Models MA.304723.377 and MA.304723.362 are both marked 651.
A. H. Wheeler, "List of Models," Mathematics Collections, Non-accession number 1979.3002.83, NMAH.
Currently not on view
Object Name
Geometric Model
Wheeler, Albert Harry
place made
United States: Massachusetts, Worcester
Physical Description
plastic (overall material)
pink (overall color)
cut and glued (overall production method/technique)
average spatial: 5 cm x 6 cm x 5.5 cm; 1 31/32 in x 2 3/8 in x 2 5/32 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
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