Для любой четверки точек A,B,C,D, отличной от ортоцентрической, окружности 9 точек треугольников ABC, BCD, ABD, ACD пересекаются в одной точке, которую называют точкой Понселе.
Для любой четверки точек A,B,C,D, отличной от ортоцентрической, окружности 9 точек треугольников ABC, BCD, ABD, ACD пересекаются в одной точке, которую называют точкой Понселе.
"There is a significant risk of insider threat or hacking of Telegram systems that could expose all of these chats to the Russian government," said Eva Galperin with the Electronic Frontier Foundation, which has called for Telegram to improve its privacy practices. So, uh, whenever I hear about Telegram, it’s always in relation to something bad. What gives? In addition, Telegram's architecture limits the ability to slow the spread of false information: the lack of a central public feed, and the fact that comments are easily disabled in channels, reduce the space for public pushback. READ MORE
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