The Nature of Parallelism
Lecture no. 7 from the course: Geometry: An Interactive Journey to Mastery
Taught by Professor James Tanton | 34 min | Categories: The Great Courses Plus Online Mathematics Courses
Examine how our usual definition of parallelism is impossible to check. Use the fundamental assumptions from the previous lectures to follow in Euclid’s footsteps and create an alternative way of checking if lines are parallel. See how, using this result, it’s possible to compute the circumference of the Earth just by using shadows!