Abstract.  The  work  is dedicated  to the principle  of  disclosure  of didactic content  projection   for   meaningful    teaching   descriptive    geometry   future architects   as    the    leading    theoretical   basis  for  the  creation  of  rational geometric-graphic  technologies for the production of various types of reversible projection images, as well as their mutual transformations.       

Key words:  aids  projection,  reversibility,   homology,  collinear matching, system, structure.      

Abatract:       The  article  presents  the  results  of  the  author's  psychological  and pedagogical techniques of creative abilities students-architects in the process of studying the course system of descriptive geometry. The basis of these techniques are hypotheses about the existence of a law-dimensional structure of the part of the plane, which is limited to an Arbitrary  triangle,   which  has  the  third   dimension,  as well as the  circle, the  circle structure which allows to divide it into equal parts of only one ruler.

Key words:  creativity, a regular structure, the third dimension equal parts.