Прямая, проходящая через ортоцентр треугольника ABC пересекает его стороны AB и AC в точках D и E соответственно. Сторона BC, перпендикуляр к AB в точке D и перпендикуляр к AC в точке E образуют треугольник T. Докажите, что описанные окружности треугольников T и ABC касаются.
Прямая, проходящая через ортоцентр треугольника ABC пересекает его стороны AB и AC в точках D и E соответственно. Сторона BC, перпендикуляр к AB в точке D и перпендикуляр к AC в точке E образуют треугольник T. Докажите, что описанные окружности треугольников T и ABC касаются.
READ MORE 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." Friday’s performance was part of a larger shift. For the week, the Dow, S&P 500 and Nasdaq fell 2%, 2.9%, and 3.5%, respectively. If you initiate a Secret Chat, however, then these communications are end-to-end encrypted and are tied to the device you are using. That means it’s less convenient to access them across multiple platforms, but you are at far less risk of snooping. Back in the day, Secret Chats received some praise from the EFF, but the fact that its standard system isn’t as secure earned it some criticism. If you’re looking for something that is considered more reliable by privacy advocates, then Signal is the EFF’s preferred platform, although that too is not without some caveats. He said that since his platform does not have the capacity to check all channels, it may restrict some in Russia and Ukraine "for the duration of the conflict," but then reversed course hours later after many users complained that Telegram was an important source of information.
from jp
