The adjective two-dimensional is used to qualify what has two dimensions (2D). A body that is projected far and wide, for example, has two dimensions. On the other hand, if it also has depth, it is an object with three dimensions (3D) and receives the qualifier of three-dimensional.

Dimensions are generally defined from the minimum quantity of coordinates that are needed for the specification of any point in her. In this way, we can affirm that a line is one-dimensional: reaches a single coordinate to locate a point.

Coordinates

A two-dimensional element is defined by two coordinates.

Two coordinates

In the case of two-dimensional elements, are required two coordinates to achieve the specification of a point. Polygons, like squares or the triangles, are two-dimensional because, to locate a point, it is necessary to establish the longitude and latitude. Following this logic, the location of a point in a three-dimensional body (like a cube) requires knowing three coordinates.

It is common to indicate that our world has four dimensions: three spatial and one temporal. The movements we make are to the left or right, forwards or backwards and downwards or upwards, and different combinations can be established. In the case of the time dimension, there would be a single address.

It should be noted that, even on a two-dimensional surface, it is possible to simulate a three-dimensional effect. A sheet of paper is two-dimensional: however, appealing to the perspective, it is possible to draw a cube, giving a sensation of three-dimensionality.

Illustration

A drawing is two-dimensional, although it can have a three-dimensional effect thanks to perspective.

Two-dimensional in electricity and graphic design

Within the field of electricity we can establish that the term that we are dealing with is also used. Specifically, it is used to refer to the characteristic that a conductive element can have. Thus, it is established that if it is two-dimensional it is because in one of the directions of space it is insulating while in the other two we can determine that it has a higher conductivity.

In addition to everything indicated, it is necessary to determine that there is what is known as two-dimensional graphic design. This is a discipline that is based on designing and shaping two-dimensional figures for various types of areas. Specifically, for photographs, drawings, paintings, computer images …

Exactly that type of design becomes a great option when it comes to shaping illustrations, logos or fonts, among other elements.

The notion in statistics

If all the information we have given you is important, even more so to know that the adjective in question is also used within the field of statistics. In that case, it is used to shape the concepts of two-dimensional statistics or two-dimensional statistical variable.

Two-dimensional statistics is the name given to the discipline that is responsible for analyzing the description of a phenomenon as well as its variations and the changes of two variables. That is, it proceeds to study phenomena in which two variables intervene jointly. Hence, among other things, we proceed to analyze what is the relationship that may exist between the two.