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Geometric Model by A. Harry Wheeler, Polar Spherical Triangles
From the collection of National Museum of American History. Free to download, adapt and use — no permission needed.
About this work
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<sup>*</sup>. 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 A<sub>2</sub>, B<sub>2</sub>, and C<sub>2</sub>. The model has no Wheeler number.
National Museum of American History’s own descriptionCredit lineGeometric Model by A. Harry Wheeler, Polar Spherical Triangles. 1920 04 06. Wheeler, Albert Harry. National Museum of American History, Gift of Helen M. Wheeler. CC0.
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