Задача 56: Автор - Григорий Забазнов Источник: MGO 2024, задача 4
На сторонах AB и AC треугольника ABC выбраны точки E и F соответственно так,что B,E,F,C лежат на одной окружности. Прямые BF и CE пересекаются в точке K. Отражение прямой AK относительно биссетрисы угла BAC пересекает BF и CE в точках M и N. Доказать, что если окружность (MKN) касается BC, то она касается и EF.
Задача 56: Автор - Григорий Забазнов Источник: MGO 2024, задача 4
На сторонах AB и AC треугольника ABC выбраны точки E и F соответственно так,что B,E,F,C лежат на одной окружности. Прямые BF и CE пересекаются в точке K. Отражение прямой AK относительно биссетрисы угла BAC пересекает BF и CE в точках M и N. Доказать, что если окружность (MKN) касается BC, то она касается и EF.
Oh no. There’s a certain degree of myth-making around what exactly went on, so take everything that follows lightly. Telegram was originally launched as a side project by the Durov brothers, with Nikolai handling the coding and Pavel as CEO, while both were at VK. For Oleksandra Tsekhanovska, head of the Hybrid Warfare Analytical Group at the Kyiv-based Ukraine Crisis Media Center, the effects are both near- and far-reaching. In addition, Telegram now supports the use of third-party streaming tools like OBS Studio and XSplit to broadcast live video, allowing users to add overlays and multi-screen layouts for a more professional look. Telegram has gained a reputation as the “secure” communications app in the post-Soviet states, but whenever you make choices about your digital security, it’s important to start by asking yourself, “What exactly am I securing? And who am I securing it from?” These questions should inform your decisions about whether you are using the right tool or platform for your digital security needs. Telegram is certainly not the most secure messaging app on the market right now. Its security model requires users to place a great deal of trust in Telegram’s ability to protect user data. For some users, this may be good enough for now. For others, it may be wiser to move to a different platform for certain kinds of high-risk communications. At the start of 2018, the company attempted to launch an Initial Coin Offering (ICO) which would enable it to enable payments (and earn the cash that comes from doing so). The initial signals were promising, especially given Telegram’s user base is already fairly crypto-savvy. It raised an initial tranche of cash – worth more than a billion dollars – to help develop the coin before opening sales to the public. Unfortunately, third-party sales of coins bought in those initial fundraising rounds raised the ire of the SEC, which brought the hammer down on the whole operation. In 2020, officials ordered Telegram to pay a fine of $18.5 million and hand back much of the cash that it had raised.
from hk
