Задача. На сторонах 𝐴𝐵, 𝐵𝐶, 𝐶𝐴 треугольника 𝐴𝐵𝐶 выбраны точки 𝐶', 𝐴' и 𝐵' соответственно так, что 𝐴'𝐵'𝐶'𝐵 — параллелограмм. На отрезке 𝐴'𝐶' выбрана точка 𝐷 так, что углы 𝐴𝐵'𝐷 и 𝐵'𝐷𝐶' равны. Докажите, что прямая 𝐷𝐵' делит угол 𝐴𝐷𝐶 пополам.
Желаем вам, чтобы с каждым днём света в жизни становилось всё больше ☀️
Задача. На сторонах 𝐴𝐵, 𝐵𝐶, 𝐶𝐴 треугольника 𝐴𝐵𝐶 выбраны точки 𝐶', 𝐴' и 𝐵' соответственно так, что 𝐴'𝐵'𝐶'𝐵 — параллелограмм. На отрезке 𝐴'𝐶' выбрана точка 𝐷 так, что углы 𝐴𝐵'𝐷 и 𝐵'𝐷𝐶' равны. Докажите, что прямая 𝐷𝐵' делит угол 𝐴𝐷𝐶 пополам.
Желаем вам, чтобы с каждым днём света в жизни становилось всё больше ☀️
On December 23rd, 2020, Pavel Durov posted to his channel that the company would need to start generating revenue. In early 2021, he added that any advertising on the platform would not use user data for targeting, and that it would be focused on “large one-to-many channels.” He pledged that ads would be “non-intrusive” and that most users would simply not notice any change. Stocks closed in the red Friday as investors weighed upbeat remarks from Russian President Vladimir Putin about diplomatic discussions with Ukraine against a weaker-than-expected print on U.S. consumer sentiment. Individual messages can be fully encrypted. But the user has to turn on that function. It's not automatic, as it is on Signal and WhatsApp. "We as Ukrainians believe that the truth is on our side, whether it's truth that you're proclaiming about the war and everything else, why would you want to hide it?," he said. In this regard, Sebi collaborated with the Telecom Regulatory Authority of India (TRAI) to reduce the vulnerability of the securities market to manipulation through misuse of mass communication medium like bulk SMS.
from nl
