Geometria, altfel - probleme pentru concursuri
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miercuri, 21 iulie 2021
Kyiv, https://artofproblemsolving.com/community/c6h2620399p22645030
Solution with my son (I made ... the drawing, he the proof, so it's even!)
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Aops, https://artofproblemsolving.com/community/c6t48f6h2645441_ratio_of_lengths_in_rightangled_triangle
Nice problem, lost source
ToT2, pr. 1, 2
Own problem
Own maybe...
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