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 46
[Definition. And they are equal to one another because they are onequal bases BC, EF, and between the same parallelsBF, GH. [I. 36. And the triangle ABC is half of the parallelogram GBCA,because the diameter ^^ bisects the parallelogram ; [I. 34.and the triangle DEF is half of the parallelogram…
Geometry · Euclid's Elements · Mathematics, Greek
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