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# vertex

[ **vur**-teks ]

## noun

*plural***ver·tex·es,****ver·ti·ces**[vur, -t, uh, -seez].- the highest point of something; apex; summit; top:
*the vertex of a mountain.* *Anatomy, Zoology.*the crown or top of the head.*Craniometry.*the highest point on the midsagittal plane of the skull or head viewed from the left side when the skull or head is in the Frankfurt horizontal.*Astronomy.*a point in the celestial sphere toward which or from which the common motion of a group of stars is directed.*Geometry.*- the point farthest from the base:
*the vertex of a cone or of a pyramid.* - a point in a geometrical solid common to three or more sides.
- the intersection of two sides of a plane figure.

vertex

/ ˈvɜːtɛks /

## noun

- the highest point
- maths
- the point opposite the base of a figure
- the point of intersection of two sides of a plane figure or angle
- the point of intersection of a pencil of lines or three or more planes of a solid figure

- astronomy a point in the sky towards which a star stream appears to move
- anatomy the crown of the head

vertex

/ vûr**′**tĕks′ /

, Plural *vertices* vûr**′**tĭ-sēz′

- The point at which the sides of an angle intersect.
- The point of a triangle, cone, or pyramid that is opposite to and farthest away from its base.
- A point of a polyhedron at which three or more of the edges intersect.

## Word History and Origins

Origin of vertex^{1}

*Latin:*“a whirl, top (of the head),” equivalent to

*vert(ere)*“to turn” +

*-ex*(stem

*-ic-*) noun suffix

## Word History and Origins

Origin of vertex^{1}

*vertere*to turn

## Example Sentences

For example, imagine you’ve got six vertices, each connected to every other vertex by edges.

The second is the average number of different cells sharing each vertex.

Then count up and average the number of vertices on all the bits of paper.

Mathematicians are particularly interested in understanding how many vertices and edges they can contain before different kinds of substructures emerge within them.

This means you’re far from being guaranteed a monochromatic clique of 5 vertices, which means the Ramsey number for this example is larger than 10 vertices.

The vertex is orange-coloured, with a black line in the middle.

Its shape varies from triangular to orbicular, the mouth of the animal forming the vertex of the triangle.

In D. Aloeus and its affinities, they are arranged in a triangle, whose vertex is towards the head.

Those parts which lie on the outside of the posterior half of the eyes, between which the Frons and Vertex intervene.

The point midway between the vertex V and center of curvature C is called the principal focus, F.

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