Geometric Model by A. Harry Wheeler, Polar Spherical Triangles

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Description
This cut and folded tan paper model is one of several in which A. Harry Wheeler illustrated properties of polar spherical triangles. A sticker on it reads: PTb*. One polar triangle is inside the other. The vertices of the outer triangle are labeled A, B, and C. The vertices of the inner triangle are labeled A2, B2, and C2. The model has no Wheeler number. It also is marked: See STRIA(1)2
For a discussion of polar triangles, see MA.304723.159.
Location
Currently not on view
date made
1925 04 06
1920 04 06
associated dates
1925 04 06 / 1925 04 06
unspecified
Wheeler, Albert Harry
maker
Wheeler, Albert Harry
place made
United States: Massachusetts, Worcester
associated place
United States: Massachusetts, Worcester
Physical Description
paper (overall material)
tan (overall color)
cut and folded (overall production method/technique)
Measurements
average spatial: 5.5 cm x 9.5 cm x 8 cm; 2 5/32 in x 3 3/4 in x 3 5/32 in
ID Number
MA.304723.666
accession number
304723
catalog number
304723.666
Credit Line
Gift of Helen M. Wheeler
subject
Mathematics
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Trigonometry
Spherical Trigonometry
Data Source
National Museum of American History, Kenneth E. Behring Center

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