La comunidad de olímpicos, ex-olímpicos, entrenadores y seguidores de la Olimpiada en Chihuahua, wherever they are in the world.
Por supuesto cualquier olímpico mexicano (para que parar ahí, de todo el mundo pues), esta invitado a comentar.
domingo, 19 de octubre de 2014
Geometria 19
Given a triangle satisfying . The incircle of triangle has center and touches the sides and at the points and , respectively. Let and be the reflections of the points and with respect to . Prove that the points , , , lie on one circle.
satisfying 
. The incircle of triangle 
and touches the sides 
and 
at the points 
and 
, respectively. Let 
and 
be the reflections of the points 
, 
, 
No hay comentarios.:
Publicar un comentario