 Hi and welcome to the session. I am Asher and I am going to help you with the following question that says, how would you rewrite Euclid's first costumate so that it would be easier to understand. Let us now begin with the solution and first let us learn what does Euclid's first costumate say. It says if a straight line, volume on two straight lines makes the interior angles on the same side of it, take it together, less than two right angles, then the two straight lines, if produced indefinitely, meet on that side on which the sum of angles is less than two right angles. Diagrammatically it can be represented as follows. If we have two straight lines L and M such that a straight line P falls on them, then if the sum of angles one and two is less than two right angles, then if we produce the two lines indefinitely, then they will meet on that side on which the sum of angles is less than two right angles. That is, they will meet somewhere at the point, oh, this is what the Euclid's first costumate say. Now let us rewrite it so the Euclid's first costumate can be rewritten as a line is parallel to L, a line through a point P which is parallel to the line L. There is only one such line. We can draw only one line passing through the point P such that it is parallel to the line L. So this is how we can write Euclid's first costumate so that it is easier to understand. You can formulate it in some other ways also. So please discuss with your friends in the class for its validity. Have a good day.