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Geometrical Model by A. Harry Wheeler, Isosceles Spherical Triangle
From the collection of National Museum of American History. Free to download, adapt and use — no permission needed.
About this work
Three segments of a white plastic disc glued together to form an isosceles spherical triangle. The model is marked "IST."
National Museum of American History’s own descriptionCredit lineGeometrical Model by A. Harry Wheeler, Isosceles Spherical Triangle. ca 1945. Wheeler, Albert Harry. National Museum of American History, Gift of Helen M. Wheeler. CC0.