Шедевр от Кирилла Бельского из старшей лиги прошедшей сегодня устной командной олимпиады JetBrains. Задача, в которой есть секрет, которого, возможно, никто из участников и не увидел...
Серединный перпендикуляр к биссектрисе AL треугольника ABC пересекает стороны AB и AC в точках F и E, а описанную окружность Omega треугольника в точках P и Q. Касательные в точках P и Q к Omega пересекаются в точке R. Докажите, что описанные окружности треугольников AEF и PQR касаются.
Шедевр от Кирилла Бельского из старшей лиги прошедшей сегодня устной командной олимпиады JetBrains. Задача, в которой есть секрет, которого, возможно, никто из участников и не увидел...
Серединный перпендикуляр к биссектрисе AL треугольника ABC пересекает стороны AB и AC в точках F и E, а описанную окружность Omega треугольника в точках P и Q. Касательные в точках P и Q к Omega пересекаются в точке R. Докажите, что описанные окружности треугольников AEF и PQR касаются.
"Markets were cheering this economic recovery and return to strong economic growth, but the cheers will turn to tears if the inflation outbreak pushes businesses and consumers to the brink of recession," he added. Apparently upbeat developments in Russia's discussions with Ukraine helped at least temporarily send investors back into risk assets. Russian President Vladimir Putin said during a meeting with his Belarusian counterpart Alexander Lukashenko that there were "certain positive developments" occurring in the talks with Ukraine, according to a transcript of their meeting. Putin added that discussions were happening "almost on a daily basis." Pavel Durov, Telegram's CEO, is known as "the Russian Mark Zuckerberg," for co-founding VKontakte, which is Russian for "in touch," a Facebook imitator that became the country's most popular social networking site. At the start of 2018, the company attempted to launch an Initial Coin Offering (ICO) which would enable it to enable payments (and earn the cash that comes from doing so). The initial signals were promising, especially given Telegram’s user base is already fairly crypto-savvy. It raised an initial tranche of cash – worth more than a billion dollars – to help develop the coin before opening sales to the public. Unfortunately, third-party sales of coins bought in those initial fundraising rounds raised the ire of the SEC, which brought the hammer down on the whole operation. In 2020, officials ordered Telegram to pay a fine of $18.5 million and hand back much of the cash that it had raised. NEWS
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