**Vertex** — Ver tex, n.; pl. {Vertexes}, L. {Vertices}. [L. vertex, icis, a whirl, top of the head, top, summit, from vertere to turn. See {Verse}, and cf. {Vortex}.] A turning point; the principal or highest point; top; summit; crown; apex. Specifically:… … The Collaborative International Dictionary of English

**Vertex of a solid** — Vertex Ver tex, n.; pl. {Vertexes}, L. {Vertices}. [L. vertex, icis, a whirl, top of the head, top, summit, from vertere to turn. See {Verse}, and cf. {Vortex}.] A turning point; the principal or highest point; top; summit; crown; apex.… … The Collaborative International Dictionary of English

**Vertex of a surface of revolution** — Vertex Ver tex, n.; pl. {Vertexes}, L. {Vertices}. [L. vertex, icis, a whirl, top of the head, top, summit, from vertere to turn. See {Verse}, and cf. {Vortex}.] A turning point; the principal or highest point; top; summit; crown; apex.… … The Collaborative International Dictionary of English

**Vertex of an angle** — Vertex Ver tex, n.; pl. {Vertexes}, L. {Vertices}. [L. vertex, icis, a whirl, top of the head, top, summit, from vertere to turn. See {Verse}, and cf. {Vortex}.] A turning point; the principal or highest point; top; summit; crown; apex.… … The Collaborative International Dictionary of English

**Vertex (curve)** — In the geometry of curves a vertex is a point of where the first derivative of curvature is zero. This is typically a local maximum or minimum of curvature. Other special cases may occur, for instance when the second derivative is also zero, or… … Wikipedia

**Vertex** — (Latin: corner; plural vertices or vertexes) may refer to:Mathematics*Vertex (geometry), a corner point of a polygon, polyhedron, tesselation, etc. *Vertex (graph theory), a node in a graph *Vertex (curve), a local extreme point of curvature… … Wikipedia

**vertex** — [vʉr′teks΄] n. pl. vertexes or vertices [vʉr′tə sēz΄] [L, the top, properly the turning point < vertere, to turn: see VERSE] 1. the highest point; summit; apex, as the top point of the sun, moon, etc. above the horizon 2. Anat. Zool. the top… … English World dictionary

**Curve orientation** — In mathematics, a positively oriented curve is a planar simple closed curve (that is, a curve in the plane whose starting point is also the end point and which has no other self intersections) such that when traveling on it one always has the… … Wikipedia

**Vertex (geometry)** — For vertices in the geometry of curves, see Vertex (curve). For other uses of the word, see Vertex (disambiguation). In geometry, a vertex (plural vertices) is a special kind of point that describes the corners or intersections of geometric… … Wikipedia

**vertex** — noun (plural vertices; also vertexes) Etymology: Middle English, top of the head, from Latin vertic , vertex, vortic , vortex whirl, whirlpool, top of the head, summit, from vertere to turn Date: 14th century 1. the top of the head 2. a. the… … New Collegiate Dictionary