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 178
point B in the straight line CB make the angle CBP equal to theangle GHK, and make BP equal to HK, and join CP, AP. Andbecause CB is equal to GH; CB, BP are equal to GH, HK, eachto each, and they contain equal angles; wherefore the base CP isequal to the base GK, that is, to LN. And in the…
Mathematics, Greek · Geometry · Trigonometry
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