Sentence Examples with the word trisect

To trisect an angle by means of this curve, describe a circle with centre 0 and radius OE, and let the given angle which is to be trisected be laid off from OE and cut the circle at S; let the chord ES cut the trisectrix in J.

This latter work consists of articles most of which were originally published in the Athenaeum, describing the various attempts which have been made to invent a perpetual motion, to square the circle, or to trisect the angle; but De Morgan took the opportunity to include many curious bits gathered from his extensive reading, so that the Budget, as reprinted by his widow (1872), with much additional matter prepared by himself, forms a remarkable collection of scientific ana.