Geometric Model, Tetrahedron


This is a wooden model of the skeleton of a tetrahedron. From ancient times, mathematicians have sought to describe and enumerated many-sided figures known as polyhedra. In The Elements, a classic textbook on geometry, the Greek mathematician Euclid showed that there are only five uniform convex polyhedra. Uniform polyhedra have identical faces and angles. Any two points on a convex polyhedron many be joined by a line that is entirely inside the polyhedron. One of the most familiar uniform convex polyhedron is the tetrahedron, which has four faces that are equilateral triangles.This model has a triangular hole at the center of each face.

Some hobbyists enjoy figuring out how to make attractive models of geometric surfaces that have long been known. Harold Walter Benson, a machinist from Chicago, made numerous geometric models in the 1990s, when he was retired and living in South Carolina.

Date Made: 1990s

Maker: Benson, Harold Walter

Location: Currently not on view

Place Made: United States: South Carolina, Clemson

Subject: Mathematics


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


Exhibition Location:

Credit Line: Gift of Katherine B. Benson

Data Source: National Museum of American History

Id Number: 1999.0130.02Catalog Number: 1999.0130.02Accession Number: 1999.0130

Object Name: Geometric Model

Physical Description: wood (overall material)Measurements: overall: 12.5 cm x 14.5 cm x 12.5 cm; 4 29/32 in x 5 23/32 in x 4 29/32 in


Record Id: nmah_694521

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