Postulate I: To draw a straight line from any point to any point. (That through any two
distinct points there exists a unique line)
Postulate II: To produce a finite line continuously in a straight line. (That any segment
may be extended without limit)
Postulate III: To describe a circle with any center and distance. (Meaning of course,
radius)
Postulate IV: All right angles are equal to one another. (Where two angles that are
congruent and supplementary are said to be right angles)
Postulate V: If a straight line falling upon two straight lines makes the interior angles
on the same side less than two right angles (in sum) then the two straight lines, if
produced indefinitely, meet on that side on which are the two angles less than the
two right angles.