The first six books of the elements of Euclid : with a commentary and geometrical exercises ; to which are annexed a treatise on solid geometry, and short essays on ancient geometrical analysis, and the theory of transversals (1861)
Lardner, Dionysius, 1793-1859 · London : Print. for Taylor and Walton · leaf 235
equal to it, andon the conterminous side of this rectangle another is to be constructedequal to the figure (A) given in magnitude. A mean proportionalbetween the sides of these, which lie in the same right line, will bethe side of the sought figure. By this proposition, while a magnitude is…
Geometry
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
