Четырёхугольник ABCD описан около окружности w. Точка I – инцентр треугольника ABC, прямые AC и BD пересекаются в точке P. Луч IP пересекает w в точке Q. (!) (ACQ) касается w
Четырёхугольник ABCD описан около окружности w. Точка I – инцентр треугольника ABC, прямые AC и BD пересекаются в точке P. Луч IP пересекает w в точке Q. (!) (ACQ) касается w
I want a secure messaging app, should I use Telegram? 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. Pavel Durov, Telegram's CEO, is known as "the Russian Mark Zuckerberg," for co-founding VKontakte, which is Russian for "in touch," a Facebook imitator that became the country's most popular social networking site. Right now the digital security needs of Russians and Ukrainians are very different, and they lead to very different caveats about how to mitigate the risks associated with using Telegram. For Ukrainians in Ukraine, whose physical safety is at risk because they are in a war zone, digital security is probably not their highest priority. They may value access to news and communication with their loved ones over making sure that all of their communications are encrypted in such a manner that they are indecipherable to Telegram, its employees, or governments with court orders. "Like the bombing of the maternity ward in Mariupol," he said, "Even before it hits the news, you see the videos on the Telegram channels."
from hk
