Plano comes from the Latin Planus. The Royal Spanish Academy defines this word as plain, smooth, without relief. In geometry, this term is widely used to refer to a schematic representation, in two dimensions and at a certain scale, of a land, a town, a machine, a construction, etc.
Also, a plane is the ideal entity that only has two dimensions, and contains infinite points and lines; it is one of the fundamental geometric entities together with the point and the line. It can only be defined or described in relation to other similar geometric elements.
It is usually described based on the characteristic postulates, which determine the relationships between the fundamental geometric entities.
When we talk about a plane, we are referring to the geometric surface that does not have volume (that is, it is only two-dimensional) and that has an infinite number of lines and points that cross it from one side to the other.
However, when the term is used in the plural, it is talking about that material that is elaborated as a graphic representation of surfaces of different types. The plans are especially used in engineering, architecture and design since they serve to diagram on a flat surface other surfaces that are regularly three-dimensional.
The plans are especially used in engineering, architecture and design since they serve to diagram on a flat surface other surfaces that are regularly three-dimensional. An example of this is the plan of a city which is a graphic representation and scale of a land, a town or the floor of a building.
