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 23
^ ELBMHNT8 … B. Cannot be equal to one another. Join CD, and if possible let CBbe ef|ual to DB; then, in the casein which tlie vertex of each of thetrian^i^les is without the other trian-gle, because AC is equal to AD, theans:le ACD is equal (5. 1.) to theangle ADC j But the angle ACD isgreater than the…
Euclid's Elements · Geometry · Trigonometry
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