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2nd Croatian Mathematical Congress
June 15-17, 2000
Croatian Mathematical Society and Dept. of Math., Univ. of Zagreb
Zagreb, Croatia

Organizers
Hrvoje Sikic (president), Pavle Pandzic (secretary)

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On properties of rectangular hyperbolas
by
Zvonko Čerin
Department of Mathematics, University of Zagreb

This work improves an old theorem about a rectangular hyperbola H : its centre lies on the pedal circle of any point on H with respect to any triangle inscribed in H . We also prove that an analogous result holds for Cevian circles. These results are used to obtain new characterisations of the Feuerbach, Jarabek, and Kiepert hyperbolas of a triangle.

Date received: March 14, 2000


Copyright © 2000 by the author(s). The author(s) of this document and the organizers of the conference have granted their consent to include this abstract in Atlas Conferences Inc. Document # cadz-97.