Book, Paragraph

 1   I,  3 |          but asserts that they are equal in power. For on this view
 2   I,  3 |           amounts of each that are equal in power, just as would
 3   I,  4 |           apparent speed, which is equal to that of things thrown
 4   I,  13|             And in Liguria a river equal in size to the Rhodanus
 5 III,  3 |          at the same point and are equal, the points where they form
 6 III,  3 |            the lines AG, AZ, AD be equal and those at B, GB, ZB,
 7 III,  3 |         and those at B, GB, ZB, DB equal too. (See diagram.)~Draw
 8 III,  3 |             Then the triangles are equal; for their base AEB is equal.
 9 III,  3 |       equal; for their base AEB is equal. Draw perpendiculars to
10 III,  3 |           these perpendiculars are equal, being in equal triangles.
11 III,  3 | perpendiculars are equal, being in equal triangles. And they are
12 III,  5 |            will make the angle KMH equal, in every plane. Further,
13 III,  5 |          of triangles on HI and KI equal to the triangles HMI and
14 III,  5 |         the same point and will be equal. Let O be the point on which