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 41
KHG, GHM; butFKH, KHG are equal(29. 1.) to two rightangles: therefore alsoKHG, GHM are equalto two right angles;and because at thepoint H in the straightline GH, the two ^ C K H M straight lines KH, HM, upon the opposite sides of it, make theadjacent angles equal to two right angles, KH is in the… … BOOK I. THE ELEMENTS OF EUCLID. * 39 the angles MHG, HGL are equal to the angles HGF, HGL; butthe angles HGM, HGL are equal (29. 1.) to two right angles;wherefore also the angles HGF, HGL are equal to two right an-gles, and FG is therefore in the same straight line with GL: andbecause KF is…
Mathematics, Greek · Geometry · Trigonometry
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