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It is called edge to line resulting from the crossing of two surfaces or planes . The edges are also the segments of a straight that mark the boundary of the sides of a flat figure.

It is possible to associate the notion of edge with the concept of edge . If we focus on a polyhedron (a body with flat faces that contain a finite volume), the edges are those straight lines in which two faces intersect.

Going deeper into the concept of polyhedron, It's about a body three-dimensional belonging to classical geometry. In its etymology we find components of the Greek language that refer to the presence of "many faces." Although many people confuse the polyhedron with the polygon, the latter is its similar topology for two dimensions: it is also created from vertices and edges, but it has only one face; In fact, a polyhedron is a set of polygons.

In addition to the polygon, there are other similar topologies in the field of classical geometry that are related to the polyhedron, although none of them is three-dimensional: the vertex (also known simply as point) is your similar in zero dimensions - Although in everyday speech it is common to use this word as a synonym for "small circle", the vertex is not long, wide or tall; the edge, which consists of one dimension; the polychlor, which in addition to the three dimensions of the polyhedron adds one, represented by cells.

In the field of Graphic Schema Theory , the edge arises from the link between two vertices of the same graph. When two vertices are connected through an artist, they are adjacent. In this context, it is said that the vertices are incidents to the edge in question.

Three-dimensional graphics design uses many of these concepts on a daily and natural basis for the creation of extremely complex models, which at first glance do not seem to rely on forms geometric basic. During the meticulous work carried out by 3d artists, they manipulate the vertices, edges and faces of their models thousands of times to achieve the results they are looking for at each step.

The 3D modeling and animation programs have the option of allowing exclusive access to one of the elements just mentioned, and each one offers a series of advantages that are suitable for diverse situations.

For example, when modeling a character's face, it is necessary to slightly adjust the position of the vertices many times, from the beginning to the end of the job; in this case, moving a face could alter the position of another two or three vertices unnecessarily. If, instead, we are designing a room and want to modify its height, it is appropriate to take the face that represents the ceiling and move it down, instead of moving each vertex or edge separately.

For the geography , the edges are the rock ridges They have some mountains. Usually, these edges are created by erosion generated by glaciers and allow the separation of two valleys.

The idea of edge also appears in the botany . In this case, the edge is the hair-like filament They have some plants, especially grasses. Barley is a species that has edges.

In colloquial language, finally, one usually speaks of an edge with reference to a point of view or one perspective . For example: "The prosecutor decided to open a new edge and will now investigate the possible link between the suspect and the victim's mother", “The judicial section is just an edge of the problem: I am concerned about the political consequences of this fact”, “I would like to address the issue from a different edge”.

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