Book, Paragraph

 1  II,  6|         one another in space, and points diametrically opposite are
 2 III,  3|          point and are equal, the points where they form an angle
 3 III,  3| circumference passing through the points GZD the cloud from which
 4 III,  5|         lines drawn from the same points to another point on that
 5 III,  5|         ratio. For since both the points H and K and the line KH
 6 III,  5|         plane drawn from the same points to any other circumference
 7 III,  5|          IH:IP=IP:IK. Now, if the points K, H be joined with the
 8 III,  5|         to B. Therefore, from the points H, K there will have been
 9 III,  5|          lines drawn to different points in the semicircle will have
10 III,  5|          lines reflected from the points H, K at the point M will