Elements of geometry : containing the first six books of Euclid, with a supplement on the quadrature of the circle, and the geometry of solids : to which are added, Elements of plane and spherical geometry (1826)
Playfair, John, 1748-1819, Euclid · Philadelphia : Marot & Walter · leaf 42
en the sameparallels, are equal to one another. Let the triangles ABC, DBC be upon the same base BC, and be-tween the same parallels AD, BC: The triangle ABC, is e- *^ ^ ^* F qual to the triangle DBC. Produce AD both ways to thepoints E, F, and through B draw(31. 1.) BE parallel to CA; andthrough C… … 42 ELEMENTS
Euclid's Elements · Geometry · Trigonometry
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