В треугольнике ABC проведены высоты AD, BE и CF. Точка A' лежит на (ABC) и такова, что AA'||BC. Точка K - пересечение (ABC) и (A'FE), отличное от A'. Докажите, что медиана AM треугольника ABC и прямая KD пересекаются на (ABC).
В треугольнике ABC проведены высоты AD, BE и CF. Точка A' лежит на (ABC) и такова, что AA'||BC. Точка K - пересечение (ABC) и (A'FE), отличное от A'. Докажите, что медиана AM треугольника ABC и прямая KD пересекаются на (ABC).
After fleeing Russia, the brothers founded Telegram as a way to communicate outside the Kremlin's orbit. They now run it from Dubai, and Pavel Durov says it has more than 500 million monthly active users. "Markets were cheering this economic recovery and return to strong economic growth, but the cheers will turn to tears if the inflation outbreak pushes businesses and consumers to the brink of recession," he added. You may recall that, back when Facebook started changing WhatsApp’s terms of service, a number of news outlets reported on, and even recommended, switching to Telegram. Pavel Durov even said that users should delete WhatsApp “unless you are cool with all of your photos and messages becoming public one day.” But Telegram can’t be described as a more-secure version of WhatsApp. For example, WhatsApp restricted the number of times a user could forward something, and developed automated systems that detect and flag objectionable content. "There are several million Russians who can lift their head up from propaganda and try to look for other sources, and I'd say that most look for it on Telegram," he said.
from tw
