The elements of Euclid for the use of schools and colleges : comprising the first two books and portions of the eleventh and twelfth books; with notes and exercises (1880)
Todhunter, I. (Isaac), 1820-1884 · Toronto : Copp, Clark · leaf 73
xiB is equal to the squares on BD, DA,because the augle BDA is a right angle ; [I. 47. and the square on .J C is equal to the squares on CD,DA. [1.47.Therefore the squares on CB, BA are equal to the squareon AC and twice the rectangle CB, BD ;that is, the square on ^C alone is less than the squares…
Geometry · Euclid's Elements · Mathematics, Greek
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