space bounded bythe curve, and not the curve itself, is the ellipse.But the word ellipse, like the word circle, is,for convenience, often used to describe both thecurve, and the enclosed space. The ellipse being a mathematical figure, it can bedrawn with perfect accuracy only by mechanicalmeans.… … Drawing the Ellipse by Mechanical Means. Directions. —Draw two straight lines, 1 2, 3 4, of indefinite length, mntnal-\y perpendicu-lar, and bisect-ing each other.From the pointof bisection, o,mark off oneither hand,along one of thelines, as at 1and 2, the samedistance, name-ly, one-half ofthe…
Drawing
Internet Archive · University of Toronto Libraries · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Il terzo [-qvinto] libro ... (1551)](https://img.insideoutlibrary.com/img/200/ia-ilterzoqvintolib00serl-29-43.webp)
