Geometric Model by A. Harry Wheeler, Two Lines with Perpendicular Planes

Geometric Model by A. Harry Wheeler, Two Lines with Perpendicular Planes

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To show relationships among planes and angles, A. H. Wheeler designed a series of what he called platform models. All of these had a rectangular platform, with other segments (often other rectangles) secured to it.
In this plastic model, a tan rectangular base has a tan rectangle perpendicular to it. Transparent green triangles are attached to the rectangles. A tag on the model reads: 2L[...]PL. The brackets indicate where a sign for perpendicular is. Another tag reads: A.Harry Wheeler
Compare MA.304723.732, 1979.0102.181, 1979.0102.182, and 1979.0102.261.
George A. Wentworth, Plane and Solid Geometry, Boston: Ginn, 1899, p. 259.
Currently not on view
Object Name
Geometric Model
A. Harry Wheeler
place made
United States: Massachusetts, Worcester
Physical Description
plastic (overall material)
overall: 4 cm x 4.7 cm x 7.6 cm; 1 9/16 in x 1 27/32 in x 3 in
ID Number
accession number
catalog number
Credit Line
Gift of Louise D. Campbell
See more items in
Medicine and Science: Mathematics
Data Source
National Museum of American History
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