Через две вершины вписанного четырёхугольника провели произвольную окружность ω. Из двух других вершин провели к ней касательные. (!) Для любой окружности ω прямая через точки касания проходит через фиксированную точку
Через две вершины вписанного четырёхугольника провели произвольную окружность ω. Из двух других вершин провели к ней касательные. (!) Для любой окружности ω прямая через точки касания проходит через фиксированную точку
Telegram does offer end-to-end encrypted communications through Secret Chats, but this is not the default setting. Standard conversations use the MTProto method, enabling server-client encryption but with them stored on the server for ease-of-access. This makes using Telegram across multiple devices simple, but also means that the regular Telegram chats you’re having with folks are not as secure as you may believe. Continuing its crackdown against entities allegedly involved in a front-running scam using messaging app Telegram, Sebi on Thursday carried out search and seizure operations at the premises of eight entities in multiple locations across the country. As the war in Ukraine rages, the messaging app Telegram has emerged as the go-to place for unfiltered live war updates for both Ukrainian refugees and increasingly isolated Russians alike. During the operations, Sebi officials seized various records and documents, including 34 mobile phones, six laptops, four desktops, four tablets, two hard drive disks and one pen drive from the custody of these persons. Anastasia Vlasova/Getty Images
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