2011 OIM Problems/Problem 4

Problem

Let $ABC$ be an acute triangle, with $AC \ne BC$ , and let $O$ be its circumcenter. Let $P$ and $Q$ points such that $BOAP$ and $COPQ$ are parallelograms. Show that $Q$ is the orthocenter from $ABC4.

~translated into English by Tomas Diaz. ~orders@tomasdiaz.com

Solution

This problem needs a solution. If you have a solution for it, please help us out by adding it.

Page

Toolbox

Search

2011 OIM Problems/Problem 4

Problem

Solution

See also