reciprocal polar figures

reciprocal polar figures

[ri¦sip·rə·kəl ¦pō·lər ′fig·yərz]
(mathematics)
Two plane figures consisting of lines and their points of intersection such that the points of each of them are the poles of the lines of the other with respect to a given conic.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.