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sâmbătă, 18 decembrie 2021

Peru Geometrico, Yusuf Zemzem, https://www.facebook.com/photo?fbid=10220853728806088&set=gm.3318129314966605


 

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https://artofproblemsolving.com/community/c6h616123p3670325

 This is my synthetic proof to the subject problem: