ulus C E ad arcum CF, ob fimilem circulorum fe&ionem per rectam B C; quarc etit arcus B D ad arcum B C, vtcirculus C E, adarcum C F: fed circulus C £, arcui B xqualis eft oftenfus , arcus ergo FC arcui C D erit equalis; quare, vtfupra, cum rectz EF, AB parallele fint, pun&um F abfoluet reuolutio-…
Astronomy -- Early works to 1800
Internet Archive · Fisher - University of Toronto · Public domain (published before 1931). Free to use for anything.
