Пусть X и Y - проекции ортоцентра H треугольника ABC на внутреннюю и внешнюю биссектрисы угла B. Докажите, что прямая XY проходит через середину стороны AC.
Пусть X и Y - проекции ортоцентра H треугольника ABC на внутреннюю и внешнюю биссектрисы угла B. Докажите, что прямая XY проходит через середину стороны AC.
For Oleksandra Tsekhanovska, head of the Hybrid Warfare Analytical Group at the Kyiv-based Ukraine Crisis Media Center, the effects are both near- and far-reaching. Telegram was co-founded by Pavel and Nikolai Durov, the brothers who had previously created VKontakte. VK is Russia’s equivalent of Facebook, a social network used for public and private messaging, audio and video sharing as well as online gaming. In January, SimpleWeb reported that VK was Russia’s fourth most-visited website, after Yandex, YouTube and Google’s Russian-language homepage. In 2016, Forbes’ Michael Solomon described Pavel Durov (pictured, below) as the “Mark Zuckerberg of Russia.” Such instructions could actually endanger people — citizens receive air strike warnings via smartphone alerts. Multiple pro-Kremlin media figures circulated the post's false claims, including prominent Russian journalist Vladimir Soloviev and the state-controlled Russian outlet RT, according to the DFR Lab's report. 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.
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