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Пусть точки A, B, C, D, E, F таковы, что никакие 3 из них не лежат на одной прямой и никакие 4 не лежат на одной окружности. Пусть P, Q, R – точки пересечения серединных перпендикуляров к парам отрезков (AD, BE), (BE, CF), (CF, DA). Пусть Po, Qo, Ro – точки пересечения серединных перпендикуляров к парам отрезков (AE, BD), (BF, CE), (CA, DF). (!) Прямые PPo, QQo, RRo пересекаются в одной точке
Пусть точки A, B, C, D, E, F таковы, что никакие 3 из них не лежат на одной прямой и никакие 4 не лежат на одной окружности. Пусть P, Q, R – точки пересечения серединных перпендикуляров к парам отрезков (AD, BE), (BE, CF), (CF, DA). Пусть Po, Qo, Ro – точки пересечения серединных перпендикуляров к парам отрезков (AE, BD), (BF, CE), (CA, DF). (!) Прямые PPo, QQo, RRo пересекаются в одной точке
Either way, Durov says that he withdrew his resignation but that he was ousted from his company anyway. Subsequently, control of the company was reportedly handed to oligarchs Alisher Usmanov and Igor Sechin, both allegedly close associates of Russian leader Vladimir Putin. What distinguishes the app from competitors is its use of what's known as channels: Public or private feeds of photos and videos that can be set up by one person or an organization. The channels have become popular with on-the-ground journalists, aid workers and Ukrainian President Volodymyr Zelenskyy, who broadcasts on a Telegram channel. The channels can be followed by an unlimited number of people. Unlike Facebook, Twitter and other popular social networks, there is no advertising on Telegram and the flow of information is not driven by an algorithm. The message was not authentic, with the real Zelenskiy soon denying the claim on his official Telegram channel, but the incident highlighted a major problem: disinformation quickly spreads unchecked on the encrypted app. "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. In 2018, Russia banned Telegram although it reversed the prohibition two years later.
from id
