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P - довільна точка на описаній коніці трикутника АВС.
А1, В1, С1 - такі точки, що пари прямих PA1, BC; PB1, CA; PC1, AB паралельні.
Довести, що AA1, BB1, CC1 паралельні



group-telegram.com/boring_problems/221
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P - довільна точка на описаній коніці трикутника АВС.
А1, В1, С1 - такі точки, що пари прямих PA1, BC; PB1, CA; PC1, AB паралельні.
Довести, що AA1, BB1, CC1 паралельні

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Telegram | DID YOU KNOW?

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The regulator said it had received information that messages containing stock tips and other investment advice with respect to selected listed companies are being widely circulated through websites and social media platforms such as Telegram, Facebook, WhatsApp and Instagram. Oleksandra Matviichuk, a Kyiv-based lawyer and head of the Center for Civil Liberties, called Durov’s position "very weak," and urged concrete improvements. Founder Pavel Durov says tech is meant to set you free The SC urges the public to refer to the SC’s I nvestor Alert List before investing. The list contains details of unauthorised websites, investment products, companies and individuals. Members of the public who suspect that they have been approached by unauthorised firms or individuals offering schemes that promise unrealistic returns Pavel Durov, a billionaire who embraces an all-black wardrobe and is often compared to the character Neo from "the Matrix," funds Telegram through his personal wealth and debt financing. And despite being one of the world's most popular tech companies, Telegram reportedly has only about 30 employees who defer to Durov for most major decisions about the platform.
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