Comentarii Jbmo 2015 ❲2027❳

A problem involving an acute triangle and perpendicular lines from a midpoint. The goal was to prove an equality between two angles,

A significant majority (24 out of 28) of gold and silver medalists achieved a perfect score on Problem 1, confirming its low difficulty. Comentarii JBMO 2015

The competition consisted of four problems covering algebra, number theory, geometry, and combinatorics. A problem involving an acute triangle and perpendicular

Participants had to find prime numbers and an integer satisfying the equation Comentarii JBMO 2015

. Notes indicate that many participants were able to solve this using analytical or vector methods.