Geometric Model by A. Harry Wheeler, Polar Spherical Triangles

Geometric Model by A. Harry Wheeler, Polar Spherical Triangles

Usage conditions apply
This cut and glued clear plastic model is one of several in which A. Harry Wheeler illustrated properties of polar spherical triangles. A sticker on it reads: PT. One polar triangle is inside the other. The vertices are unlabeled. The model is undated and has no Wheeler number.
For a discussion of polar triangles, see 304723.159. Compare 304723.491, 304723.516, 304723.521, and 304723.213.
Currently not on view
Object Name
Geometric Model
A. Harry Wheeler
place made
United States: Massachusetts, Worcester
Physical Description
plastic (overall material)
overall: 5.2 cm x 8.6 cm x 5.1 cm; 2 1/16 in x 3 3/8 in x 2 in
ID Number
accession number
catalog number
Credit Line
Gift of Louise D. Campbell
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Spherical Trigonometry
Data Source
National Museum of American History
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