В равнобедренном треугольнике ABC, AB = BC. Точка D на BC такова, что верно равенство углов: DAB = BAC. Точки X и Y на AB и BC соответственно таковы, что AX : XB = 2 : 1 и BY : YC = 2 : 1. Доказать, что отражение D относительно XY лежит на AC.
В равнобедренном треугольнике ABC, AB = BC. Точка D на BC такова, что верно равенство углов: DAB = BAC. Точки X и Y на AB и BC соответственно таковы, что AX : XB = 2 : 1 и BY : YC = 2 : 1. Доказать, что отражение D относительно XY лежит на AC.
The regulator said it has been undertaking several campaigns to educate the investors to be vigilant while taking investment decisions based on stock tips. Lastly, the web previews of t.me links have been given a new look, adding chat backgrounds and design elements from the fully-features Telegram Web client. Emerson Brooking, a disinformation expert at the Atlantic Council's Digital Forensic Research Lab, said: "Back in the Wild West period of content moderation, like 2014 or 2015, maybe they could have gotten away with it, but it stands in marked contrast with how other companies run themselves today." The gold standard of encryption, known as end-to-end encryption, where only the sender and person who receives the message are able to see it, is available on Telegram only when the Secret Chat function is enabled. Voice and video calls are also completely encrypted. Such instructions could actually endanger people — citizens receive air strike warnings via smartphone alerts.
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