Book, Paragraph

 1  II,  5|      tambourine. If you draw lines from the centre of the earth
 2  II,  5|      drum-shaped figure. The lines form two cones; the base
 3 III,  3|      of a circle: for if the lines start from the same point
 4 III,  3|   Let AGB and AZB and ADB be lines each of which goes from
 5 III,  3|      forms an angle. Let the lines AG, AZ, AD be equal and
 6 III,  5|    the horizon. Then, if the lines that fall in a cone from
 7 III,  5|      and M being joined, the lines KM are reflected from the
 8 III,  5|  over the greater angle, the lines from K will fall on the
 9 III,  5|    KMH is produced). Now the lines drawn from H and K to a
10 III,  5| ratio to one another, and no lines drawn from the same points
11 III,  5|    ratio cannot hold between lines in the same plane drawn
12 III,  5|      the circle on which the lines from K fall. For the ratio
13 III,  5|      with the point P by the lines HP, KP, these lines will
14 III,  5|      the lines HP, KP, these lines will be to one another as
15 III,  5|   there will have been drawn lines with the same ratio to one
16 III,  5|     all the angles which the lines from H and K make by their
17 III,  5|    be shown, as before, that lines drawn to different points
18 III,  5|  about the diameter HKI, the lines reflected from the points