Geometric Model by A. Harry Wheeler, Polar Spherical Triangles


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.

Date Made: 1920 04 06

Maker: Wheeler, Albert Harry

Location: Currently not on view

Place Made: United States: Massachusetts, Worcester

Subject: Mathematics

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


Exhibition Location:

Credit Line: Gift of Helen M. Wheeler

Data Source: National Museum of American History

Id Number: MA.304723.666Accession Number: 304723Catalog Number: 304723.666

Object Name: Geometric Model

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


Record Id: nmah_1073386

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