Difference between revisions of "1992 OIM Problems/Problem 3"

Line 13: Line 13:
 
== Solution ==
 
== Solution ==
  
[[File:1992_OIM_P3.png|Center|300px]]
+
[[File:1992_OIM_P3.png|center|400px]]
  
 
* Note.  I actually competed at this event in Venezuela when I was in High School representing Puerto Rico.  I got full points for part a and partial points for part b.  I don't remember what I did.  I will try to write a solution for this one later.
 
* Note.  I actually competed at this event in Venezuela when I was in High School representing Puerto Rico.  I got full points for part a and partial points for part b.  I don't remember what I did.  I will try to write a solution for this one later.

Revision as of 21:32, 14 December 2023

Problem

In an equilateral triangle $ABC$ whose side has length 2, the circle $G$ is inscribed.

a. Show that for every point $P$ of $G$, the sum of the squares of its distances to the vertices $A$, $B$ and $C$ is 5.

b. Show that for every point $P$ in $G$ it is possible to construct a triangle whose sides have the lengths of the segments $AP$, $BP$ and $CP$, and that its area is:

\[\frac{\sqrt{3}}{4}\]

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


Solution

1992 OIM P3.png
  • Note. I actually competed at this event in Venezuela when I was in High School representing Puerto Rico. I got full points for part a and partial points for part b. I don't remember what I did. I will try to write a solution for this one later.

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/ibe7.htm