Geometric Model by A. Harry Wheeler, Icosidodecahedron


This faces of this tan plastic model are twenty equilateral triangles and twelve pentagons. The sides and solid angles of the figure are equal, and it is called a semi-regular solid. The ancient Greek mathematician Archimedes enumerated the eighteen regular and semi-regular solids, and they are known as Archimedean solids in his honor.

The model is marked on a typed paper tag: RS 9. It is marked in ink: IX (/) 14. This model had Wheeler’s number 14 and was number IX of his Archimedean solids.


Magnus J. Wenninger, Polyhedron Models, Cambridge: The University Press, 1971, p. 26.

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, Science & Mathematics


Exhibition Location:

Credit Line: Gift of Helen M. Wheeler

Data Source: National Museum of American History

Id Number: MA.304723.475Accession Number: 304723Catalog Number: 304723.475

Object Name: Geometric Model

Physical Description: plastic (overall material)tan (overall color)cut and glued (overall production method/technique)Measurements: average spatial: 8.5 cm x 11 cm x 8.7 cm; 3 11/32 in x 4 11/32 in x 3 7/16 in


Record Id: nmah_1071182

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