One of the most iconic and awe-inspiring structures of the ancient world continues to mystify historians and archaeologists. This square-based pyramid, like most pyramids, has been thought to have ...

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Pyramids have been built around the world but the most famous pyramids of all time are probably the ones in Egypt. These triangular structures - of which hundreds have been constructed -- were built ...

Triangles, and the sloping ceilings they create, don’t make a natural fit for human habitation. But for his idyllic wooden house in rural Sweden, architect Leo Qvarsebo embraced the triangle, creating ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Thiscut and folded tan paper model ...

A 3D shape with all straight edges and flat faces is a polyhedron. Other 3D shapes with least one curved surface are not polyhedra. A 3D shape with regular polygonal faces, meeting at equal angles, is ...