The elements of Euclid : viz, the first six books, together with the eleventh and twelfth : the errors, by which Theon, or others, have long ago vitiated these books, are corrected, and some of Euclid's demonstrations are restored : also, The book of Euclid's data, in like manner corrected (1834)
Euclid, Euclid, Simson, Robert, 1687-1768 · Philadelphia : Desilver & Thomas · leaf 179
qual to RL. Wherefore AB, BC, DE, EF, GH, HK areeach of them equal to each of the straight lines RL, RM, RN.A^i^ because RL, RM are equal to AB, BC, and the base LM tothe base AC; the angle LRM is equal (8. I.) to the angle ABC.For the same reason, the angle MRN is equal to the angle DEF,and NRL to… … N
Mathematics, Greek · Geometry · Trigonometry
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.