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Задача. В треугольнике 𝐴𝐵𝐶 через вершину 𝐴 проведена прямая 𝑙, параллельная 𝐵𝐶. Биссектрисы внешних углов треугольника при вершинах 𝐵 и 𝐶 пересекают прямую 𝑙 в точках 𝑃 и 𝑄 соответственно. Перпендикуляр к 𝐵𝑃, восставленный в точке 𝑃, и перпендикуляр к 𝐶𝑄, восставленный в точке 𝑄, пересекаются в точке 𝑅. Пусть 𝐼 – точка пересечения биссектрис треугольника 𝐴𝐵𝐶. Докажите, что 𝐴𝐼 = 𝐴𝑅.
Передаем привет вам из замурчательного Стамбула 🇹🇷🐈
Задача. В треугольнике 𝐴𝐵𝐶 через вершину 𝐴 проведена прямая 𝑙, параллельная 𝐵𝐶. Биссектрисы внешних углов треугольника при вершинах 𝐵 и 𝐶 пересекают прямую 𝑙 в точках 𝑃 и 𝑄 соответственно. Перпендикуляр к 𝐵𝑃, восставленный в точке 𝑃, и перпендикуляр к 𝐶𝑄, восставленный в точке 𝑄, пересекаются в точке 𝑅. Пусть 𝐼 – точка пересечения биссектрис треугольника 𝐴𝐵𝐶. Докажите, что 𝐴𝐼 = 𝐴𝑅.
Передаем привет вам из замурчательного Стамбула 🇹🇷🐈
Channels are not fully encrypted, end-to-end. All communications on a Telegram channel can be seen by anyone on the channel and are also visible to Telegram. Telegram may be asked by a government to hand over the communications from a channel. Telegram has a history of standing up to Russian government requests for data, but how comfortable you are relying on that history to predict future behavior is up to you. Because Telegram has this data, it may also be stolen by hackers or leaked by an internal employee. In the past, it was noticed that through bulk SMSes, investors were induced to invest in or purchase the stocks of certain listed companies. The next bit isn’t clear, but Durov reportedly claimed that his resignation, dated March 21st, was an April Fools’ prank. TechCrunch implies that it was a matter of principle, but it’s hard to be clear on the wheres, whos and whys. Similarly, on April 17th, the Moscow Times quoted Durov as saying that he quit the company after being pressured to reveal account details about Ukrainians protesting the then-president Viktor Yanukovych. Russians and Ukrainians are both prolific users of Telegram. They rely on the app for channels that act as newsfeeds, group chats (both public and private), and one-to-one communication. Since the Russian invasion of Ukraine, Telegram has remained an important lifeline for both Russians and Ukrainians, as a way of staying aware of the latest news and keeping in touch with loved ones. In this regard, Sebi collaborated with the Telecom Regulatory Authority of India (TRAI) to reduce the vulnerability of the securities market to manipulation through misuse of mass communication medium like bulk SMS.
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