CC0 · no rights reserved
Geometric Model by A. Harry Wheeler, Two 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 shows two spherical triangles on the same section of a sphere, one inside the other. It is collapsible.
National Museum of American History’s own descriptionCredit lineGeometric Model by A. Harry Wheeler, Two Polar Spherical Triangles. 1916. Wheeler, Albert Harry. National Museum of American History, Gift of Helen M. Wheeler. CC0.