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Задача. Пусть 𝑀 – середина диагонали 𝐴𝐶 равнобокой трапеции с основаниями 𝐵𝐶 и 𝐴𝐷 (𝐴𝐷 > 𝐵𝐶). Окружности Ω и 𝜔 описаны около треугольников 𝐴𝑀𝐷 и 𝐵𝑀𝐶 соответственно. Касательные к окружности 𝜔, проведённые в точках 𝐵 и 𝑀 пересекаются в точке 𝑃 . Докажите, что прямая 𝑃𝐴 касается окружности Ω.
С наступающим Новым годом 🎄☃️ Пусть у вас будут самые красивые ёлочные игрушки 🎄🔴
Задача. Пусть 𝑀 – середина диагонали 𝐴𝐶 равнобокой трапеции с основаниями 𝐵𝐶 и 𝐴𝐷 (𝐴𝐷 > 𝐵𝐶). Окружности Ω и 𝜔 описаны около треугольников 𝐴𝑀𝐷 и 𝐵𝑀𝐶 соответственно. Касательные к окружности 𝜔, проведённые в точках 𝐵 и 𝑀 пересекаются в точке 𝑃 . Докажите, что прямая 𝑃𝐴 касается окружности Ω.
С наступающим Новым годом 🎄☃️ Пусть у вас будут самые красивые ёлочные игрушки 🎄🔴
Andrey, a Russian entrepreneur living in Brazil who, fearing retaliation, asked that NPR not use his last name, said Telegram has become one of the few places Russians can access independent news about the war. "And that set off kind of a battle royale for control of the platform that Durov eventually lost," said Nathalie Maréchal of the Washington advocacy group Ranking Digital Rights. At its heart, Telegram is little more than a messaging app like WhatsApp or Signal. But it also offers open channels that enable a single user, or a group of users, to communicate with large numbers in a method similar to a Twitter account. This has proven to be both a blessing and a curse for Telegram and its users, since these channels can be used for both good and ill. Right now, as Wired reports, the app is a key way for Ukrainians to receive updates from the government during the invasion. 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." "This time we received the coordinates of enemy vehicles marked 'V' in Kyiv region," it added.
from br
