MOLNÁR EmilThe Kárteszi point of a triangle by the absolute sine theorem of János Bolyai. To the Memory of my Mentor Professor Ferenc Kárteszi (1907-1989)Professor Ferenc Kárteszi was a charismatic personality of the Hungarian mathematics education and science (finite, non-Euclidean and descriptive geometry). He made presentation trips also in Slovakia. His didactical credo on the role of problem solving in mathematics education will be illustrated and reported here: Starting with an elementary geometrical problem how to get the solution, generalization for theory, application and further on. |