Условие: 2 окружности пересекаются в точках А и В. через В проведена прямая, которая пересекает первую окружность в точке С, вторую в точке D. из точки В проведено 2 луча, которые пересекают первую окружность в точке P, вторую в точке Q, отрезок АС в точке М, отрезок АD в точке N. Оказалось, что MNPQ - вписанный. докажите, что если O - центр окружности (ACD) то ВO перпендикулярно МN
Условие: 2 окружности пересекаются в точках А и В. через В проведена прямая, которая пересекает первую окружность в точке С, вторую в точке D. из точки В проведено 2 луча, которые пересекают первую окружность в точке P, вторую в точке Q, отрезок АС в точке М, отрезок АD в точке N. Оказалось, что MNPQ - вписанный. докажите, что если O - центр окружности (ACD) то ВO перпендикулярно МN
Just days after Russia invaded Ukraine, Durov wrote that Telegram was "increasingly becoming a source of unverified information," and he worried about the app being used to "incite ethnic hatred." 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. And indeed, volatility has been a hallmark of the market environment so far in 2022, with the S&P 500 still down more than 10% for the year-to-date after first sliding into a correction last month. The CBOE Volatility Index, or VIX, has held at a lofty level of more than 30. Perpetrators of these scams will create a public group on Telegram to promote these investment packages that are usually accompanied by fake testimonies and sometimes advertised as being Shariah-compliant. Interested investors will be asked to directly message the representatives to begin investing in the various investment packages offered. But Telegram says people want to keep their chat history when they get a new phone, and they like having a data backup that will sync their chats across multiple devices. And that is why they let people choose whether they want their messages to be encrypted or not. When not turned on, though, chats are stored on Telegram's services, which are scattered throughout the world. But it has "disclosed 0 bytes of user data to third parties, including governments," Telegram states on its website.
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