#геометрия #задача
В треугольнике ABC чевианы AD, BE, CF пересекаются в точке P, AH — высота. Точки H1 и H2 — образы точки H при симметрии относительно DE и DF соответственно. Докажите, что A, H1, H2 лежат на одной прямой.
BY JustScience | Олимпиадная Математика
A project of our size needs at least a few hundred million dollars per year to keep going,” Mr. Durov wrote in his public channel on Telegram late last year. “While doing that, we will remain independent and stay true to our values, redefining how a tech company should operate.
The messaging service and social-media platform owes creditors roughly $700 million by the end of April, according to people briefed on the company’s plans and loan documents viewed by The Wall Street Journal. At the same time, Telegram Group Inc. must cover rising equipment and bandwidth expenses because of its rapid growth, despite going years without attempting to generate revenue.
JUSTSCIENCEMATH Telegram Group from tw