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Polyhedron Model by Martin Berman, Elongated Square Cupola
From the collection of National Museum of American History. Free to download, adapt and use — no permission needed.
About this work
This model has a square top, four squares and four equilateral triangles in next layer, eight squares in next layer, and a regular octagon on bottom. Thus its faces total four equilateral triangles, thirteen squares, and one regular octagon.
National Museum of American History’s own descriptionCredit linePolyhedron Model by Martin Berman, Elongated Square Cupola. 1970. Berman, Martin. National Museum of American History, Gift of Martin Berman. CC0.