Book, Paragraph

 1   I, 5 |         angular and angle-less, straight and round.~It is plain then
 2  II, 2 |  attributes. "Odd" and "even", "straight" and "curved", and likewise "
 3  II, 7 |           to the definition of "straight line" or "commensurable", &
 4  II, 9 |    operation of nature. Since a straight line is what it is, it is
 5  II, 9 |      two right angles, then the straight line is not what it is either.
 6 III, 7 |  postulate only that the finite straight line may be produced as
 7  IV, 9 |    circular, but sometimes in a straight line.~These then are the
 8  IV, 9 |         that was not convex but straight (for differences of degree
 9  IV, 14|         circle, or both along a straight line; and similarly in all
10   V, 3 |      which is most distant in a straight line: for the shortest line
11   V, 4 | specifically different from the straight) the motion itself is also
12   V, 4 |     that which is regular, as a straight line is regular, the irregular
13   V, 4 |        e.g. in a circle or on a straight line, and it is the same
14 VII, 4 |        circumference equal to a straight line, or, of course, the
15 VII, 4 |      case of the circle and the straight line? It would be absurd
16 VII, 4 |      circle and of another in a straight line cannot be similar,
17 VII, 4 |        greater or less than the straight line; and if so it is possible
18 VII, 4 |        viz. that there may be a straight line equal to a circle.
19 VII, 4 |      same meaning as applied to straight motion and to circular motion
20 VII, 4 |         admit the equality of a straight line and a circumference.
21 VIII, 8|      that which turns back in a straight line undergoes two contrary
22 VIII, 8|    stand, not only when it is a straight line that is traversed,
23 VIII, 8|       and the actual. So in the straight line in question any one
24 VIII, 8|    motions that follow the same straight line are contrary to each
25 VIII, 8|    motions that follow the same straight line are contrary motions,
26 VIII, 8|         if they are on the same straight line (for then they are
27 VIII, 9|        be shown as follows. The straight line traversed in rectilinear
28 VIII, 9|       such thing as an infinite straight line; and even if there
29 VIII, 9|  rectilinear motion on a finite straight line is if it turns back