Advanced Geometric Problem & Solution (Twice a week update) Now 4812 problems posted.
<Tri-2026-2346>, hint
<Tri-2026- 2346>, general, Locus
<Spain MO 1968>
<Qua-2026-824>, hint
<Qua-2026-824>, rectangle, construction
<Spain MO 1967>
<Tri-2026-2345>, hint
