- 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. Specifically:
[1913 Webster]
(a) (Anat.) The top, or crown, of the head.
[1913 Webster]
(b) (Anat.) The zenith, or the point of the heavens directly
overhead.
[1913 Webster]
(c) (Math.) The point in any figure opposite to, and farthest
from, the base; the terminating point of some particular
line or lines in a figure or a curve; the top, or the
point opposite the base.
[1913 Webster]
Note: The principal vertex of a conic section is, in the parabola, the vertex of the axis of the curve: in the ellipse, either extremity of either axis, but usually the left-hand vertex of the transverse axis; in the hyperbola, either vertex, but usually the right-hand vertex of the transverse axis. [1913 Webster]
{Vertex of a curve} (Math.), the point in which the axis of the curve intersects it.
{Vertex of an angle} (Math.), the point in which the sides of the angle meet.
{Vertex of a solid}, or {Vertex of a surface of revolution} (Math.), the point in which the axis pierces the surface. [1913 Webster]
The Collaborative International Dictionary of English. 2000.
См. также в других словарях:
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 curve — 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 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 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 — [ vɛrtɛks ] n. m. • v. 1560; mot lat. « sommet de la tête » ♦ Anat. Point le plus élevé sur la ligne médiane de la voûte du crâne. ● vertex nom masculin invariable (latin vertex, icis, sommet culminant) Sommet de la tête, tant chez l homme et les … Encyclopédie Universelle
Surface — This article discusses surfaces from the point of view of topology. For other uses, see Differential geometry of surfaces, algebraic surface, and Surface (disambiguation). An open surface with X , Y , and Z contours shown. In mathematics,… … Wikipedia
Axis of revolution — Axis Ax is, n.; pl. {Axes}. [L. axis axis, axle. See {Axle}.] A straight line, real or imaginary, passing through a body, on which it revolves, or may be supposed to revolve; a line passing through a body or system around which the parts are… … The Collaborative International Dictionary of English
Vertexes — 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
Vertices — 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
Catenary — This article is about the mathematical curve. For other uses, see Catenary (disambiguation). Chainette redirects here. For the wine grape also known as Chainette, see Cinsaut. A hanging chain forms a catenary … Wikipedia
