The assimilation of concepts depends on the degree of commitment of the student and the methodology adopted. Some people use the method of repetition, others prefer to make analogies. The fact is that one of the most efficient methodologies is to include the concepts in the personal routine. By connecting concepts with your activities, it will be easier to remember them, since the routine is something particular, which you know well.
They are intersecting because they are overlapping at one point but do not make a 90 degree angle Thus not being perpendicular. Also they are not parallel cause they are intersecting
