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duminică, 15 mai 2022

Training Geometry Olympiad, Hasan Ata, https://www.facebook.com/photo?fbid=5185603564855965&set=gm.685908789336104

 


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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...