Advanced Geometric Problem & Solution (Twice a week update) Now 4848 problems posted.
<Tri-2026-2368>, hint
<Tri-2026-2368>, general, bisector
<Spain MO 2010>
<Tri-2026-2367>, hint
<Tri-2026-2367>, general, center
<Spain MO 2009>
<Cir-2026-806>, hint
