В остроугольном треугольнике ABC отметили центр описанной окружности O и ортоцентр H. Перпендикуляр из H на AO пересекает BC в точке X. Перпендикуляр в X к BC вместе с прямыми AB и AC ограничивает треугольник Δ. Точка S — центр описанной окружности треугольника Δ. Докажите, что SX касается окружности (ABC).
В остроугольном треугольнике ABC отметили центр описанной окружности O и ортоцентр H. Перпендикуляр из H на AO пересекает BC в точке X. Перпендикуляр в X к BC вместе с прямыми AB и AC ограничивает треугольник Δ. Точка S — центр описанной окружности треугольника Δ. Докажите, что SX касается окружности (ABC).
"We as Ukrainians believe that the truth is on our side, whether it's truth that you're proclaiming about the war and everything else, why would you want to hide it?," he said. A Russian Telegram channel with over 700,000 followers is spreading disinformation about Russia's invasion of Ukraine under the guise of providing "objective information" and fact-checking fake news. Its influence extends beyond the platform, with major Russian publications, government officials, and journalists citing the page's posts. 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. 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.” However, the perpetrators of such frauds are now adopting new methods and technologies to defraud the investors.
from jp
