National Museum of American History
Geometric Model by A. Harry Wheeler, Polar Spherical Triangles
Wheeler, Albert Harry
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: PTa<sup>*</sup>, One polar triangle is inside the other. The vertices are unlabeled. The model is undated and has no Wheeler number.
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