Definition: Polyhedric meaning, a term describing three-dimensional objects with flat surfaces or which are built from flat surfaces such as cubes or cylinders. Definition: A polyhedron is a three-dimensional figure formed by polygons (or polyhedra). It consists of five regular polygon faces, one at each corner of the solid. Each of these faces is called a face. Polyhedra are commonly classified into two broad categories: convex and concave. A convex polyhedron has all its vertices at angles that are not equal to 180 degrees (a vertex being said to be "centered" if it is not on the opposite edge of the polyhedron). A concave polyhedron has no such property. For more details and examples, refer to Wikipedia or any online textbook.
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