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 43
and join EC; The triangle A BC,is equal (37. 1.) to the triangle EBC, because it is upon the same baseBC, and between the same parallels BC,AE; But the triangle ABC is equal to thetriangle BDC; therefore also the triangleBDC is equal to the triangle EBC, the great-er to the less, which is… … OP GEOMETRY. BOOK I. 43
Euclid's Elements · Geometry · Trigonometry
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