Geometric Model by A. Harry Wheeler, Trihedral Angles
Geometric Model by A. Harry Wheeler, Trihedral Angles
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- Description
- In this cut and glued plastic model, a transparent tetrahedron (lacking a base) has equilateral triangles for side faces. Inside it is a white triangle with edges on two faces (and a third edge where the base would be). George Wentworth used two such figures in a diagram in a theorem defining two equal trihedral angles in terms of the face angles on the faces surrounding the trihedral angle. A tag on the model reads: 2TRIA. Another tag reads: A. Harry Wheeler.
- For a related pattern, dated February 2, 1945, see 1979.0102.109.
- Compare 1979.0102.206 and 1979.0102.207.
- Reference:
- George A. Wentworth (with David Eugene Smith), Plane and Solid Geometry, Boston: Ginn and Company, 1913, pp. 312-313.
- Location
- Currently not on view
- Object Name
- Geometric Model
- maker
- Wheeler, Albert Harry
- place made
- United States: Massachusetts, Worcester
- Physical Description
- plastic (overall material)
- green (overall color)
- white (overall color)
- cut and glued (overall production method/technique)
- Measurements
- average spatial: 6.6 cm x 5.7 cm x 6.2 cm; 2 19/32 in x 2 1/4 in x 2 7/16 in
- ID Number
- MA.304723.713
- accession number
- 304723
- catalog number
- 304723.713
- Credit Line
- Gift of Helen M. Wheeler
- subject
- Mathematics
- See more items in
- Medicine and Science: Mathematics
- Science & Mathematics
- Data Source
- National Museum of American History
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