Задача. Дан параллелограмм 𝐴𝐵𝐶𝐷. На стороне 𝐴𝐷 выбрана точка 𝑋 таким образом, что ∠𝑋𝐶𝐷 = ∠𝐵𝐶𝐴. Прямые 𝐶𝑋 и 𝐴𝐵 пересеклись в точке 𝑌. Точка 𝑂 центр описанной окружности треугольника 𝐴𝑋𝑌. Докажите, что прямая 𝐶𝑂 перпендикулярна прямой 𝐵𝐷.
Желаем вам получить удовольствие от выбора подарков 🎁
Задача. Дан параллелограмм 𝐴𝐵𝐶𝐷. На стороне 𝐴𝐷 выбрана точка 𝑋 таким образом, что ∠𝑋𝐶𝐷 = ∠𝐵𝐶𝐴. Прямые 𝐶𝑋 и 𝐴𝐵 пересеклись в точке 𝑌. Точка 𝑂 центр описанной окружности треугольника 𝐴𝑋𝑌. Докажите, что прямая 𝐶𝑂 перпендикулярна прямой 𝐵𝐷.
Желаем вам получить удовольствие от выбора подарков 🎁
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." At its heart, Telegram is little more than a messaging app like WhatsApp or Signal. But it also offers open channels that enable a single user, or a group of users, to communicate with large numbers in a method similar to a Twitter account. This has proven to be both a blessing and a curse for Telegram and its users, since these channels can be used for both good and ill. Right now, as Wired reports, the app is a key way for Ukrainians to receive updates from the government during the invasion. Investors took profits on Friday while they could ahead of the weekend, explained Tom Essaye, founder of Sevens Report Research. Saturday and Sunday could easily bring unfortunate news on the war front—and traders would rather be able to sell any recent winnings at Friday’s earlier prices than wait for a potentially lower price at Monday’s open. Continuing its crackdown against entities allegedly involved in a front-running scam using messaging app Telegram, Sebi on Thursday carried out search and seizure operations at the premises of eight entities in multiple locations across the country. "For Telegram, accountability has always been a problem, which is why it was so popular even before the full-scale war with far-right extremists and terrorists from all over the world," she told AFP from her safe house outside the Ukrainian capital.
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