The elements of Euclid for the use of schools and colleges; comprising the first six books and portions of the eleventh and twelfth books; (1903)
Euclid, Todhunter, I. (Isaac), 1820-1884, ed. edt, Simson, Robert, 1687-1768, ed. edt · London; New York, Macmillan · leaf 78
because for the same reason EF = BC ; . •. AD = EF; [Axiom L .*. the whole, or the remainder, AE = the whole, or the re-mainder, DF. [Axioms 2, 3.Then, in the triangles EAB, FDC,AB = DC,and AE=:DF, and the exterior angle FDC = the interior oppositeI angle EAB; [L 29. . •. the A EAB = the A FDC.…
Euclid's Elements · Geometry · Mathematics, Greek
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