The evolution of the graphical representation of the architecture with the development of procedures for computer-aided designs is causing a shift in the way of thinking about architecture. Traditionally, the teaching of descriptive geometry that allows architects in training cognition full three-dimensional space. Changing this tradition, today we have the construction of the projective drawing by computer, CAD or BIM. We aim to question the way to teach courses in the projective geometry of architecture and urbanism in the face of profound changes in knowledge and representation of the form established by computer graphics technology with CAD and BIM.