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 32
other. [I. 5. But the angle ECD is greater than the angle BCD, [Axiom 8. therefore the angle FDC is also greater than the angle BCD; much more then is the angle BDC greater than the angle BCD, Again, because BO is equal to BD, IHypothesis. the angle BDC is equal to the angle BCD. [I. 5, But it has… … Proof. For if the triangle .ABO be applied to the triangleDEF, so that the point B may be on the point E,and the straight line BC on the straight line EF,the point C will also coincide with the point F, because BO is equal to EF. [Hypothesis, Therefore, BO coinciding with EF, BA and AO will…
Euclid's Elements · Geometry · Mathematics, Greek
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