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YGO 2024, 10-11 класи, Задача 5.

Нехай 𝐴𝐵𝐶𝐷𝐸𝐹 — вписаний шестикутник, причому 𝐴𝐷||𝐸𝐹. На діагоналях 𝐴𝐸 та 𝐷𝐹 відмітили точки 𝑋 та 𝑌 відповідно так, що 𝐶𝑋 = 𝐸𝑋 та 𝐵𝑌 = 𝐹𝑌. Нехай 𝑂 — точка перетину 𝐴𝐸 та 𝐹𝐷, 𝑃 — точка перетину 𝐶𝑋 та 𝐵𝑌, 𝑄 — точка перетину 𝐵𝐹 та 𝐶𝐸. Доведіть, що точки 𝑂, 𝑃, 𝑄 лежать на одній прямій.

Матвій Курський



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YGO 2024, 10-11 класи, Задача 5.

Нехай 𝐴𝐵𝐶𝐷𝐸𝐹 — вписаний шестикутник, причому 𝐴𝐷||𝐸𝐹. На діагоналях 𝐴𝐸 та 𝐷𝐹 відмітили точки 𝑋 та 𝑌 відповідно так, що 𝐶𝑋 = 𝐸𝑋 та 𝐵𝑌 = 𝐹𝑌. Нехай 𝑂 — точка перетину 𝐴𝐸 та 𝐹𝐷, 𝑃 — точка перетину 𝐶𝑋 та 𝐵𝑌, 𝑄 — точка перетину 𝐵𝐹 та 𝐶𝐸. Доведіть, що точки 𝑂, 𝑃, 𝑄 лежать на одній прямій.

Матвій Курський

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The perpetrators use various names to carry out the investment scams. They may also impersonate or clone licensed capital market intermediaries by using the names, logos, credentials, websites and other details of the legitimate entities to promote the illegal schemes. Since January 2022, the SC has received a total of 47 complaints and enquiries on illegal investment schemes promoted through Telegram. These fraudulent schemes offer non-existent investment opportunities, promising very attractive and risk-free returns within a short span of time. They commonly offer unrealistic returns of as high as 1,000% within 24 hours or even within a few hours. "We're seeing really dramatic moves, and it's all really tied to Ukraine right now, and in a secondary way, in terms of interest rates," Octavio Marenzi, CEO of Opimas, told Yahoo Finance Live on Thursday. "This war in Ukraine is going to give the Fed the ammunition, the cover that it needs, to not raise interest rates too quickly. And I think Jay Powell is a very tepid sort of inflation fighter and he's not going to do as much as he needs to do to get that under control. And this seems like an excuse to kick the can further down the road still and not do too much too soon." In 2018, Russia banned Telegram although it reversed the prohibition two years later. The Security Service of Ukraine said in a tweet that it was able to effectively target Russian convoys near Kyiv because of messages sent to an official Telegram bot account called "STOP Russian War."
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