В выпуклом четырёхугольнике ABCD E - точка пересечения диагоналей. F - точка пересечения лучей AB и DC. Точка X - E-точка Шалтая треугольника AED, а точка Y - E-точка Шалтая треугольника BEC. Доказать, что (XEY) касается FE.
В выпуклом четырёхугольнике ABCD E - точка пересечения диагоналей. F - точка пересечения лучей AB и DC. Точка X - E-точка Шалтая треугольника AED, а точка Y - E-точка Шалтая треугольника BEC. Доказать, что (XEY) касается FE.
Artem Kliuchnikov and his family fled Ukraine just days before the Russian invasion. Messages are not fully encrypted by default. That means the company could, in theory, access the content of the messages, or be forced to hand over the data at the request of a government. Russian President Vladimir Putin launched Russia's invasion of Ukraine in the early-morning hours of February 24, targeting several key cities with military strikes. 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. "For Telegram, accountability has always been a problem, which is why it was so popular even before the full-scale war with far-right extremists and terrorists from all over the world," she told AFP from her safe house outside the Ukrainian capital.
from tr
