Задача. Окружности 𝑠₁ и 𝑠₂ касаются внешним образом. Их линия центров пересекает 𝑠₁ в точках 𝐴 и 𝑃, и пересекает 𝑠₂ в точках 𝐵 и 𝑃. Общая внешняя касательная касается 𝑠₁ и 𝑠₂ в точках 𝐴₁ и 𝐵₁ соответственно. Прямые 𝐴𝐴₁ и 𝐵𝐵₁ пересекаются в точке 𝑄. Докажите, что 𝑃𝑄 является общей касательной для 𝑠₁ и 𝑠₂.
Желаем вам больше приятных задач по геометрии и не только 📚
Задача. Окружности 𝑠₁ и 𝑠₂ касаются внешним образом. Их линия центров пересекает 𝑠₁ в точках 𝐴 и 𝑃, и пересекает 𝑠₂ в точках 𝐵 и 𝑃. Общая внешняя касательная касается 𝑠₁ и 𝑠₂ в точках 𝐴₁ и 𝐵₁ соответственно. Прямые 𝐴𝐴₁ и 𝐵𝐵₁ пересекаются в точке 𝑄. Докажите, что 𝑃𝑄 является общей касательной для 𝑠₁ и 𝑠₂.
Желаем вам больше приятных задач по геометрии и не только 📚
Groups are also not fully encrypted, end-to-end. This includes private groups. Private groups cannot be seen by other Telegram users, but Telegram itself can see the groups and all of the communications that you have in them. All of the same risks and warnings about channels can be applied to groups. 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." The original Telegram channel has expanded into a web of accounts for different locations, including specific pages made for individual Russian cities. There's also an English-language website, which states it is owned by the people who run the Telegram channels. Oh no. There’s a certain degree of myth-making around what exactly went on, so take everything that follows lightly. Telegram was originally launched as a side project by the Durov brothers, with Nikolai handling the coding and Pavel as CEO, while both were at VK. Apparently upbeat developments in Russia's discussions with Ukraine helped at least temporarily send investors back into risk assets. Russian President Vladimir Putin said during a meeting with his Belarusian counterpart Alexander Lukashenko that there were "certain positive developments" occurring in the talks with Ukraine, according to a transcript of their meeting. Putin added that discussions were happening "almost on a daily basis."
from pl
