This looks really impressive, but I don't think that figure drawing should be required in lectures. It's a huge distraction, lecturers should prepare scripts in

This looks really impressive, but I don't think that figure drawing should be required in lectures. It's a huge distraction, lecturers should prepare scripts instead, in this day and age. Redrawing the figure might help some understanding, if construction is proof, but often it only serves to depict labels on a graph, not to solve a geometric puzzle.