51�Թ�

As a professor, he taught a class called descriptive geometry, which involved teaching students to use two-dimensional images to represent three-dimensional shapes and problems.

His labours were chiefly in the field of descriptive geometry, with its application to the arts and mechanical engineering.

In descriptive geometry two straight lines in a plane do not necessarily intersect, and a straight line is an open series without beginning or end.

Thirty-nine professors imparted instruction in analysis, mechanics, descriptive geometry, physics, chemistry, land-surveying, architecture, the military art, fortifications, plans, French composition, the German language and design.

A course in descriptive geometry followed by an elementary technical course.