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 🎄🔴
WhatsApp, a rival messaging platform, introduced some measures to counter disinformation when Covid-19 was first sweeping the world. Telegram users are able to send files of any type up to 2GB each and access them from any device, with no limit on cloud storage, which has made downloading files more popular on the platform. The news also helped traders look past another report showing decades-high inflation and shake off some of the volatility from recent sessions. The Bureau of Labor Statistics' February Consumer Price Index (CPI) this week showed another surge in prices even before Russia escalated its attacks in Ukraine. The headline CPI — soaring 7.9% over last year — underscored the sticky inflationary pressures reverberating across the U.S. economy, with everything from groceries to rents and airline fares getting more expensive for everyday consumers. 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. He floated the idea of restricting the use of Telegram in Ukraine and Russia, a suggestion that was met with fierce opposition from users. Shortly after, Durov backed off the idea.
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