Content of type 'post'

I.post.5

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

I.post.4

That all right angles are equal to one another.

I.post.3

To describe a circle with any centre and distance.

I.post.2

To produce a finite straight line continuously in a straight line.

I.post.1

To draw a straight line from any point to any point.