In mathematics, a convex polyhedron is defined to be k {\displaystyle k} -equiprojective if every orthogonal projection of the polygon onto a plane, in a direction not parallel to a face of the polyhedron, forms a k {\displaystyle k} -gon. For example, a cube is 6-equiprojective: every projection not parallel to a face forms a hexagon, More generally, every prism over a convex k {\displaystyle k} is ( k + 2 ) {\displaystyle (k+2)} -equiprojective.
In mathematics, a convex polyhedron is defined to be k {\displaystyle k} -equiprojective if every orthogonal projection of the polygon onto a plane, in a direction not parallel to a face of the polyhedron, forms a k {\displaystyle k} -gon. For example, a cube is 6-equiprojective: every projection not parallel to a face forms a hexagon, More generally, every prism over a convex k {\displaystyle k} is ( k + 2 ) {\displaystyle (k+2)} -equiprojective.
Source: Wikipedia "Equiprojective polyhedra" · CC BY-SA 4.0
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