Triangle construction: A BC HbHc

Geometry Problems from IMOs

P473 Let BHb and CHc be the altitudes of triangle ABC. Restore the triangle if the point A and the lines BC, HbHc are given.
(S. Yakovlev and G. Filippovskiy, Kyiv)



Application. The Triangle Center X(222)

http://amontes.webs.ull.es/otrashtm/HGT2020.htm#HG140420

Angel Montesdeoca. April, 2020