Selected propositions in geometrical constructions and applications of algebra to geometry. Being a key to the appendix of Davies' Legendre (1875)
Legendre, A. M. (Adrien Marie), 1752-1833, Davies, Charles, 1798-1876 · New York, Chicago [etc.] A.S. Barnes & company · leaf 35
t possiblewhen KT is parallel to CD (Prop. VI, Key). Hence, the whole lineKT is the greatest possible when it is parallel to CD, which was to beproved. Prop. XL. Problem.— Construct the greatest possible equilateraltriangle whose sides shall pass through three given points, A, B, andC, not in the… … PROPOSITIONS FROM LEGEKDRE. 29
Geometry
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