A general geometry and calculus : including book I. of the general geometry, treating of loci in a plane; and an elementary course in the differential and integral calculus (1881)
Olney, Edward, 1827-1887 · New York : Sheldon and Co. · leaf 91
blem of theDuplication of the cube and the Tri-section of an angle had been shown tobe identical, as both depend upon theinsertion of two means in a continuedproportion between two extremes.Thus, letting a and b be the extremes,it is required to find x and y, so thata : X : y : b ; i. e., a : x : :… … Fig. 65. that is, AD : ED : AD : ID. The Triseciion of an angle by means of the conchoid is effected thus : LetCOM, Fig. 66, be the angle to be trisected. From any point, D, in oneleg let fall a perpendicular, DB, on the other. Take CB =2D0, andwith O as the fixed point, XX as the fixed line, and…
Geometry, Analytic · Calculus
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