Euler characteristic/Definition: Difference between revisions
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In a [[polyhedron]], a number calculated as the number of [[Vertex (geometry)|vertices]] minus the number of [[Edge (geometry)|edge]]s plus the number of [[Face (geometry)|faces]]; it is always equal to 2 for [[convex polyhedron|convex polyhedra]]. | |||
Latest revision as of 13:01, 8 February 2010
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Euler characteristic [r]: In a polyhedron, a number calculated as the number of vertices minus the number of edges plus the number of faces; it is always equal to 2 for convex polyhedra.