# vertex

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## vertex

1. Maths
a. the point opposite the base of a figure
b. the point of intersection of two sides of a plane figure or angle
c. the point of intersection of a pencil of lines or three or more planes of a solid figure
2. Astronomy a point in the sky towards which a star stream appears to move
3. Anatomy the crown of the head

## Vertex

The highest point of a structure; the apex or summit.

## Vertex

(religion, spiritualism, and occult)

In geometry, a vertex is the pivot point of an angle. In astrology, the vertex is the point in a horoscope where the prime vertical intersects the ecliptic in the west. The antivertex is the corresponding point in the east. The vertex was discovered/invented by L. Edward Johndro and elaborated upon by Charles Jayne. The point where the vertex falls in a chart is said to be the most fated (i.e., least amenable to conscious choices) part of the horoscope. All major astrological chart-casting software programs allow one to calculate the vertex.

## Vertex

the point on the celestial sphere toward which the peculiar motions of stars are predominantly directed. There are two such points, diametrically opposed on the celestial sphere, with the galactic coordinates l = 344°, b -1° and l = 164°, b = 1°.

## vertex

[′vər‚teks]
(astronomy)
The highest point that a celestial body attains.
On a great circle, that point that is closest to a pole.
(mathematics)
For a polygon or polyhedron, any of those finitely many points which together with line segments or plane pieces determine the figure or solid.
The common point at which the two sides of an angle intersect.
The fixed point through which pass all the elements of a cone or conical surface.
An intersection of a conic with one of its axes of symmetry.
A member of the set of points that are connected by the edges. Also known as node.
For a simplex, one of the finite set of points on which a simplex is based.
(optics)
One of the points where the surface of a lens intersects the optical axis.

## vertex

Every great circle intersects two points, 180° apart. These points are 90° away from the longitude of the vertices. The angle at which the great circle intersects the equator is equal to the co-latitude of the vertices. The purpose of determining position of the vertex is to facilitate calculation of intermediate position along the great circle track between which short rhumb-line courses can be steered. Based on the fact that the great circle track intersects the meridian of the vertex at 90°, Napier's rule can be used to solve the successive right angles to obtain intermediate positions.
i. The last fix adapted on the arrival speed segment. Normally, it will be the outer marker of the runway in use. However, it may be the actual threshold or another suitable common point on the approach path for the particular runway configuration.
ii. In astronavigation, the vertex of a great circle is the point at which the great circle is nearest the geographic pole—that is, the point at which it reaches the maximum latitude. Every great circle has two vertices (one in each hemisphere). In the solution of great-circle sailing problems, only the vertex nearest the arc forming the great-circle track is considered.

## vertex

A corner point of a triangle or other geometric image. Vertices is the plural form of this term. See vertex shader.
References in periodicals archive ?
1: The super subdivision graph S (Pn K1) is a vertex equitable graph.
In this case each vertex in A is adjacent to two vertices only of B.
The pre-root is the vertex whose colour will be changed.
it does not say whether the passage from one element to the next is through a vertex or edge.
In addition to VX-950, Vertex is developing merimepodib in combination with pegylated interferon alpha (peg-IFN) and ribavirin.
As an answer to the current siloed process of global provisioning, Vertex Tax Accounting allows for increased data sharing between the tax and finance departments to drive performance.
In [3] Baca, Jendrol , Miller and Ryan defined a new graph invariant, called the total vertex irregularity strength of that is the minimum for which the graph has a vertex irregular total k-labeling.
At the company's Massachusetts headquarters, Vertex employs more than 1,300 people and plans to add an additional 500 jobs in various parts of the company and at different levels through 2015 to support its continued growth.
Viglione joined Vertex in 1998 and has been responsible for multiple initiatives.
Major Hahn has been called to service and deployed during his tenure at Vertex with assignments in Kosovo (2003-2004), New Orleans - post Hurricane Katrina (2005), and most recently returned to Vertex after a 23-month mobilization, which included an 8-month deployment to Iraq as a Major in the 56th Stryker Brigade Combat Team, 28th Infantry Division.
The continued growth that we are experiencing with sales of Vertex O Series to the Retail industry, demonstrates the value that this product is bringing to a specialized market segment," states John Cowan, Director of Solutions Practice.
In direct response to customer feedback, which indicated a significant decrease in travel budgets as a result of the current economy, Vertex made the decision to move Exchange from an on-site conference event to an online environment.

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