В треугольнике ABC I - центр вписанной окружности, а D - её точка касания со стороной BC. Отражение D относительно середины BC - точка E. A' - диаметрально противоположная точке A на окружности (ABC). G - проекция D на прямую через A' параллельную BC. Докажите, что (DEG) касается (ABC).
В треугольнике ABC I - центр вписанной окружности, а D - её точка касания со стороной BC. Отражение D относительно середины BC - точка E. A' - диаметрально противоположная точке A на окружности (ABC). G - проекция D на прямую через A' параллельную BC. Докажите, что (DEG) касается (ABC).
In 2018, Russia banned Telegram although it reversed the prohibition two years later. After fleeing Russia, the brothers founded Telegram as a way to communicate outside the Kremlin's orbit. They now run it from Dubai, and Pavel Durov says it has more than 500 million monthly active users. In addition, Telegram now supports the use of third-party streaming tools like OBS Studio and XSplit to broadcast live video, allowing users to add overlays and multi-screen layouts for a more professional look. He floated the idea of restricting the use of Telegram in Ukraine and Russia, a suggestion that was met with fierce opposition from users. Shortly after, Durov backed off the idea. Telegram has gained a reputation as the “secure” communications app in the post-Soviet states, but whenever you make choices about your digital security, it’s important to start by asking yourself, “What exactly am I securing? And who am I securing it from?” These questions should inform your decisions about whether you are using the right tool or platform for your digital security needs. Telegram is certainly not the most secure messaging app on the market right now. Its security model requires users to place a great deal of trust in Telegram’s ability to protect user data. For some users, this may be good enough for now. For others, it may be wiser to move to a different platform for certain kinds of high-risk communications.
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