Euclid’s Elements (300BC)

Source:¬†aleph0.clarku.edu/~djoyce/java/elements/bookVII/bookVII.html#guide   ELEMENTS BOOK 1:¬†Fundamentals of Plane Geometry Involving¬†Straight-Lines Definitions A point is that which has no part. A line is breadthless length. The ends of a line are points. A straight …