Problem A. 474. (February 2009)
A. 474. The point Q is located in the convex n-gon . Show that
(The indices are considered modulo n, e.g. P0=Pn and Pn+1=P1.)
Deadline expired on March 16, 2009.
7 students sent a solution. 5 points: Éles András, Nagy 235 János, Nagy 314 Dániel, Nagy 648 Donát, Tomon István, Tossenberger Anna, Varga 171 László.