Main Page | See live article | Alphabetical index A vertex (Latin: whirl, whirlpool; plural vertices), in geometry, is a corner of a polygon (where two sides meet) or of a polyhedron (where three or more faces and an equal number of edges meet). In 3D computer graphics, a vertex is a point in 3D space with a particular location, usually given in terms of its x, y, and z coordinates. It is one of the fundamental structures in polygonal modelling: two vertices, taken together, can be used to define the endpoints of a line; three vertices can be used to define a planar triangle. In graph theory, a graph describes a set of connections between nodes. Each node or vertex can map to an object. The connections between the nodes are called edges or arcs. See also parabola. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.