Задача. В остроугольном треугольнике 𝐴𝐵𝐶 проведены высоты 𝐵𝐷 и 𝐶𝐸. Пусть 𝐹 и 𝐺 — точки на прямой 𝐸𝐷 такие, что 𝐵𝐹 ⊥ 𝐸𝐷 и 𝐶𝐺 ⊥ 𝐸𝐷. Докажите, что 𝐸𝐹 = 𝐷𝐺.
Задача. В остроугольном треугольнике 𝐴𝐵𝐶 проведены высоты 𝐵𝐷 и 𝐶𝐸. Пусть 𝐹 и 𝐺 — точки на прямой 𝐸𝐷 такие, что 𝐵𝐹 ⊥ 𝐸𝐷 и 𝐶𝐺 ⊥ 𝐸𝐷. Докажите, что 𝐸𝐹 = 𝐷𝐺.
As a result, the pandemic saw many newcomers to Telegram, including prominent anti-vaccine activists who used the app's hands-off approach to share false information on shots, a study from the Institute for Strategic Dialogue shows. Now safely in France with his spouse and three of his children, Kliuchnikov scrolls through Telegram to learn about the devastation happening in his home country. 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. Crude oil prices edged higher after tumbling on Thursday, when U.S. West Texas intermediate slid back below $110 per barrel after topping as much as $130 a barrel in recent sessions. Still, gas prices at the pump rose to fresh highs. "And that set off kind of a battle royale for control of the platform that Durov eventually lost," said Nathalie Maréchal of the Washington advocacy group Ranking Digital Rights.
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