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 ...
ITHACA, N.Y. – A new prototype of a knitting machine creates solid, knitted shapes, adding stitches in any direction – forward, backward and diagonal – so users can construct a wide variety of shapes ...
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