Mathematics for engineering students, Analytical geometry and calculus (1907)
Keller, S. S. (Samuel Smith), 1867-1923, Knox, W. F., [from old catalog] joint author · New York : D. Van Nostrand company · leaf 91
, Fig. 29.) The latus rectum evidently equals 2 p, and is often calledthe double ordinate through the focus. Art. 57. To construct the parabola. First Method. The definition suggests a simple mechan-ical means of constructing the parabola. Let the edge ofa T-square (AB, Fig. 31) represent the… … Fig. 31. base of the triangle with a pen-cil (as at G) slide the ruleralong the T-square and thepoint of the pencil will de-scribe a parabola, for every-where it will be equallydistant from AB and F,as at G; for EG = GF,since GF = EC - GC= EC - GC and EG= EC - GCSecond Method: For practical…
Geometry, Analytic · Calculus
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Rudiments of the art of building : represented in five sections [...] for the use of architects, builders, draghtsmen, machinists, engineers and mechanics (1853)](https://img.insideoutlibrary.com/img/200/ia-rudimentsofartof00bull-40-8.webp)
