The plural of *vertex* is **vertices or vertexes**.

*A vertex, in mathematical and geometrical contexts, refers to a point where two or more lines, edges, or curves intersect. It is often used to describe the corners or meeting points of polygons, polyhedra, or graphs.*

Vertices play a crucial role in defining the shape and structure of various mathematical objects.

Yes, "*vertex*" and "*vertices*" refer to the same concept but in different forms. "*Vertex*" is the singular form, while "*vertices*" is the plural form.

It is essential to use the appropriate form based on whether you are referring to a single point of intersection (vertex) or multiple points of intersection (vertices).

The correct plural form of vertex is "*vertices*." Following the typical rule for forming plurals in English, the "-*es*" suffix is added to words ending in "-*ex*" to indicate plurality.

While "*vertexes*" may be occasionally encountered, "*vertices*" is the preferred and more widely accepted plural form, particularly within mathematical and technical contexts.

In grammar, nouns can be classified as either countable or uncountable. Countable nouns refer to things that can be counted as individual items, while uncountable nouns refer to things that cannot be counted or are treated as a whole.

The word "vertex" is considered a countable noun. It represents a specific point where two or more edges meet in geometry. It can be counted as individual instances when referring to multiple distinct points of intersection.

For example, you can say "*There are five vertices in this polygon*" to indicate the specific count of individual points.

On the other hand, uncountable nouns do not have plural forms and cannot be counted as separate entities. They represent concepts or substances that are considered as a whole. Examples of uncountable nouns include "*water*," "*information*," or "*furniture*."

There isn't a specific collective noun for a group of vertices or vertexes. However, you can use phrases like "*a collection of vertices*" or "*a set of vertices*" to refer to multiple vertices together.

These expressions effectively convey the idea of a group or assemblage of vertices.

Singular Form - Vertex:

*The***vertex**of a triangle is where the three sides intersect.*In geometry, a***vertex**is a point where two or more edges meet.*The three-dimensional shape has a sharp***vertex**at its corner.

Plural Form - Vertices:

*The polygon is defined by its four***vertices**: A, B, C, and D.*When analyzing the complex network, all the interconnected***vertices**must be considered.*The three-dimensional model consists of multiple***vertices**and edges.

Plural Form - Vertexes:

*The algorithm connects the different***vertexes**in the graph.*After resizing, the image lost some of its sharp***vertexes**.*The data points are plotted as scattered***vertexes**on the graph.

*The graph shows the occurances of the plural of vertex in written English since 1800 using Google's Ngram Viewer.*

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