... Archimedes’ works 10Translation and Commentary 29On the Sphere and the Cylinder, Book I 31On the Sphere and the Cylinder, Book II 185Eutocius’ Commentary to On the Sphere and the Cylinder I 243Eutocius’ ... triangle having the same base as the segment and an equal height.3Later, theorems worthy of mention suggested themselves to us, and wetook the trouble of preparing their proofs. They are these: first, ... equal to the line drawn from the vertex of the segment to the circumference of the circle which is the base of the segment.5Next to these, that, in every sphere, the cylinder having a1 The later...