Advanced Geometric Problem & Solution (Twice a week update) Now 4896 problems posted.
<Cir-2026-811>, hint
<Cir-2026-811>, tangent, angle
<Qua-2026-836>, hint
<Qua-2026-836>, parallelogram, cyclic
<Swiss 2011 MO>
<Tri-2026-2802>, hint
