Хорошая задача на хорошую идею. Я дурею от этой идеи...
Вписанная в четырехугольник ABCD окружность w касается его сторон BC и AD в точках E и F. Прямая ED вторично пересекает w в точке X. Оказалось, что (FXD) касается AB и CD. (!) Точки A, F, X, C лежат на одной окружности
Хорошая задача на хорошую идею. Я дурею от этой идеи...
Вписанная в четырехугольник ABCD окружность w касается его сторон BC и AD в точках E и F. Прямая ED вторично пересекает w в точке X. Оказалось, что (FXD) касается AB и CD. (!) Точки A, F, X, C лежат на одной окружности
Unlike Silicon Valley giants such as Facebook and Twitter, which run very public anti-disinformation programs, Brooking said: "Telegram is famously lax or absent in its content moderation policy." Despite Telegram's origins, its approach to users' security has privacy advocates worried. The channel appears to be part of the broader information war that has developed following Russia's invasion of Ukraine. The Kremlin has paid Russian TikTok influencers to push propaganda, according to a Vice News investigation, while ProPublica found that fake Russian fact check videos had been viewed over a million times on Telegram. "There is a significant risk of insider threat or hacking of Telegram systems that could expose all of these chats to the Russian government," said Eva Galperin with the Electronic Frontier Foundation, which has called for Telegram to improve its privacy practices. The regulator said it has been undertaking several campaigns to educate the investors to be vigilant while taking investment decisions based on stock tips.
from ye
