Hatfield, Robert Griffith, 1815-1879. [from old catalog] · New York & London, Wiley and Putnam · leaf 72
f, draw h i, parallel to b d. In every paral-lelogram thus divided, the parallelogram, A, is equal to the paral-lelogram, B. According to Art. 143, the triangle, a & c, isequal to the triangle, bed; the triangle, C, to the triangle, D ;and EtoF; this being the case, take D and F from the… … Fig. 103. 145.—Proposition. Parallelograms standing upon the samebase and between the same parallels, are equal. Let abed andefcd, {Fig-. 103,) be given parallelograms, standing upon thesame base, c d, and between the same parallels, a f and c d.Then, ab and e/being equal to c d, are equal to one…
Carpentry · Architecture
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