VERTEX • FREE TRANSLATOR.ORG • Definition of Vertex

... secondary transformers, has constructed a little motor based upon an entirely new principle, which is as follows: If we take two inductive fields developed by two bobbins, the axes of which cut each other at right angles, and a pole placed at the vertex of the angle, this pole will be subjected to the simultaneous action of the two bobbins, and the resultant of the magnetic actions will be represented in magnitude and direction by the diagonal of the parallelogram, two consecutive sides of which have ...

— Scientific American Supplement, No. 717, September 28, 1889 • Various

... has come down to breakfast gowned in her very best morning frock, one reserved for those rare occasions when people drop in over night and sleep with them. She has, indeed, all the festive appearance of a person who expects to be called away at a second's notice into a very vertex of dissipation. ...

— April's Lady - A Novel • Margaret Wolfe Hungerford