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  • ...ns a number of intuitively obvious statements that can be effectively used to solve some Olympiad mathematical problems. We explore only central projecti ...he line <math>AO</math> ​​intersects this plane. We want to find a one-to-one mapping of plane <math>\Pi</math> onto plane <math>\Pi'</math> using su
    39 KB (6,959 words) - 14:26, 3 December 2024