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sâmbătă, 8 ianuarie 2022

Binh Luc, Training Geometry Olympiad, https://www.facebook.com/photo/?fbid=2744416309192869&set=gm.613388303254820


 

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Nice problem, lost source, again

 Today I saw an old problem on fb geometry sites, with a very nice solution bearing the inconfoundable signature of Master Hasan Ata; attach...