how woul you rewrite euclid 'fifth postulate so that it would be easier to understand

Euclid's fifth postulate : If a straight line crossing two straight lines makes the interior angles on the same side less than two right angles, the two straight lines, if extended indefinitely, meet on that side on which are the angles less than the two right angles.

The fifth postulate refers to the diagram on the right. If the sum of two angles A and B formed by a line L and another two lines L₁ and L₂ sum up to less than two right angles then lines L₁ and L₂ meet on the side of angles A and B if continued indefinitely.