Advanced Geometric Problem & Solution (Twice a week update) Now 4861 problems posted.
<Qua-2026-832>, hint
<Qua-2026-832>, general , cyclic
<Spain MO 2025>
<Tri-2026-2378>, hint
<Tri-2026-2378>, general, collinear
<Spain MO 2024>
<Tri-2026-2377>, hint