Descriptive Geometry is a projection system that uses geometric figures, to train logical reasoning and mental isolation. In practice, what is intended with this discipline is to pass geometric figures from space to two-dimensional representation.

In this discipline, arithmetic operations are not performed to solve the exercises; these are solved by tracing based on geometric logic. The measures used only to serve, to place the data of a statement; from that moment everything is solved with operations of the plot.

There is no need or convenience in systematically using three-dimensional models or computer programs that highlight the three-dimensional of figures and space.

The advantages that result from this, in pedagogical terms, are minimal and punctual. The most It is important to take the student to develop the capacity for spatial vision in the absence of these models and the presence of two -dimensional traces.

This discipline needs a regular and continuous study, which consists not only in reading the texts and viewing the images but also in the frequent performance of exercises because only through them clarify many doubts and consolidate knowledge.

One should not forget that, in addition to general situations, there are, in all matters, particular situations, and both deserve due attention.

The training that Descriptive Geometry provides is an important tool for the study of other representation methods, such as Axonometry, Conical Perspective or Multiple Projection Orthogonal (system of elevations, cuts, etc.).