поризм мікеля, або ботанський погляд на поворотну гомотетію. дано n кіл ω_1, ω_2,...,ω_n що проходять через одну точку O. вторинні точки перетину(між ω_1 і ω_2, ..., ω_n і ω_1) позначимо як P_1, P_2,..., P_n. A_1 - довільна точка на ω_1, A_2 - точка перетину A_1P_1 і ω_2,..., доведіть, що точки P_{n+1} і P_1 співпадають
це не задача, а просто спостереження таке тривіальне.
поризм мікеля, або ботанський погляд на поворотну гомотетію. дано n кіл ω_1, ω_2,...,ω_n що проходять через одну точку O. вторинні точки перетину(між ω_1 і ω_2, ..., ω_n і ω_1) позначимо як P_1, P_2,..., P_n. A_1 - довільна точка на ω_1, A_2 - точка перетину A_1P_1 і ω_2,..., доведіть, що точки P_{n+1} і P_1 співпадають
це не задача, а просто спостереження таке тривіальне.
BY скучні задачі
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Update March 8, 2022: EFF has clarified that Channels and Groups are not fully encrypted, end-to-end, updated our post to link to Telegram’s FAQ for Cloud and Secret chats, updated to clarify that auto-delete is available for group and channel admins, and added some additional links. In the past, it was noticed that through bulk SMSes, investors were induced to invest in or purchase the stocks of certain listed companies. Either way, Durov says that he withdrew his resignation but that he was ousted from his company anyway. Subsequently, control of the company was reportedly handed to oligarchs Alisher Usmanov and Igor Sechin, both allegedly close associates of Russian leader Vladimir Putin. There was another possible development: Reuters also reported that Ukraine said that Belarus could soon join the invasion of Ukraine. However, the AFP, citing a Pentagon official, said the U.S. hasn’t yet seen evidence that Belarusian troops are in Ukraine. "Someone posing as a Ukrainian citizen just joins the chat and starts spreading misinformation, or gathers data, like the location of shelters," Tsekhanovska said, noting how false messages have urged Ukrainians to turn off their phones at a specific time of night, citing cybersafety.
from cn
