Definition:Polyhedron

From ProofWiki
Jump to: navigation, search

Definition

A polyhedron is a three-dimensional figure that is contained by polygonal faces.


Face

The faces of a polyhedron are the polygons which contain it.


Edge

The edges of a polyhedron are the sides of the polygons which constitute its faces.


Vertex

The vertices of a polyhedron are the vertices of the polygons which constitute its faces.


Linguistic Note

The word polyhedron comes directly from the Classical Greek πολύεδρον:

polys (πολύς), meaning many
hedron (a form of ἕδρα), meaning base or seat.


The technically correct plural of polyhedron is polyhedra, but the word polyhedrons can often be found.


Sources