I

To draw a straight line from any point to any point

II

To produce a finite straight line continuously in a straight line

III

To describe a circle with any center and radius

IV

That all right angles equal each other

V

That, if a straight line falling on two straight lines makes the interior angles on the same side less than two right angles, the two lines, if produced indefinitely, meet on that side on which are the angles less than the two right angles