Introduction to Euclid’s Geometry – Notes
Introduction to Euclid’s Geometry
Definition 1: A point is that which has no part.
Definition 2: A line is breathless length.
Definition 3: The ends of a line are points.
Definition 4: A straight line is a line which lies evenly with the points on itself.
Definition 5: A surface is that which has length and breadth only.
Definition 6: The edges of a surface are lines.
Definition 7: A plane surface is a surface which lies evenly with the straight line on itself.