Technical Drawing in Creative Work of Civil Engineer, Scientist, Educational Specialist A. Betancourt (devoted to the 250<sup>th</sup> anniversary of birth)
The influence of mathematical sciences, including methods of depiction, on the development of geometrical direction in studying mechanics of machines and other engineering disciplines is considered. The authors show A. Betancourt's contribution to organization of higher polytechnic education in Russia in first third of the 19th century and give examples of mathematical sciences application for solving specific engineering problems.