Точки О та Н — центр описаного коло та ортоцентр трикутника АВС. Пряма АО перетинає ВН та СН у точках X та Y. Доведіть, що пряма Ейлера трикутника HXY паралельна прямій, яка сполучає точку А та центр описаного кола трикутника АОН.
Точки О та Н — центр описаного коло та ортоцентр трикутника АВС. Пряма АО перетинає ВН та СН у точках X та Y. Доведіть, що пряма Ейлера трикутника HXY паралельна прямій, яка сполучає точку А та центр описаного кола трикутника АОН.
The fake Zelenskiy account reached 20,000 followers on Telegram before it was shut down, a remedial action that experts say is all too rare. Telegram does offer end-to-end encrypted communications through Secret Chats, but this is not the default setting. Standard conversations use the MTProto method, enabling server-client encryption but with them stored on the server for ease-of-access. This makes using Telegram across multiple devices simple, but also means that the regular Telegram chats you’re having with folks are not as secure as you may believe. Ukrainian forces have since put up a strong resistance to the Russian troops amid the war that has left hundreds of Ukrainian civilians, including children, dead, according to the United Nations. Ukrainian and international officials have accused Russia of targeting civilian populations with shelling and bombardments. In 2014, Pavel Durov fled the country after allies of the Kremlin took control of the social networking site most know just as VK. Russia's intelligence agency had asked Durov to turn over the data of anti-Kremlin protesters. Durov refused to do so. In 2018, Russia banned Telegram although it reversed the prohibition two years later.
from sa
