1987 OIM Problems/Problem 2

Revision as of 12:26, 13 December 2023 by Tomasdiaz (talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Problem

On a triangle $ABC$, $M$ and $N$ are the respective midpoints of sides $AC$ and $AB$, and $P$ is the midpoint of the intersection of $BM$ and $CN$. Prove that, if is possible to inscribe a circumference in the quadrilateral $ANPM$, then triangle $ABC$ is isosceles.

~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.

See also

https://www.oma.org.ar/enunciados/ibe2.htm