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 26
PROPOSITIONS FROM LEGENDRE. 19 … Prop. XXV.— Construct an equilateral triangle, having given oneof its altitudes. Solution.—Let AD be equal to the given altitude. Draw anyline AQ, perpendicular to AD, and on anypart of it, as AB, construct an equilateraltriangle ABC. Through D, draw DP par-allel to AQ, intersecting AC, produced…
Geometry
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
