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• DEF A point is that which has no part
  • has no width, length, or breadth, an indivisible location
• DEF A line is breadthless length
  • one dimension, length
• AXM end/edges of a line are points
• DEF A straight line is a line which lies evenly with the points on itself
• DEF A surface is that which has length and breadth only
• AXM The end/edges of surface are lines
• DEF A plane surface is a surface which lies evenly with the straight lines on itself
• DEF A plane angle is the inclination to one another of two lines in a plane which meet one another and do not lie in a straight line.
• DEF And when the lines containing the angle are straight, the angle is called rectilinear.