Задача. Параллелограммы 𝐴𝐵𝐶𝐷 и 𝐴𝐸𝐹𝐺 расположены на плоскости так, что 𝐷𝐸 = 𝐶𝐹. Прямые 𝐵𝐺, 𝐷𝐸 и 𝐶𝐹, пересекаясь, ограничивают треугольник ∆. Докажите, что этот треугольник равнобедренный.
Доброго вам утра ☀️, бодрого дня ☕️ и уютного вечера 🧸
Задача. Параллелограммы 𝐴𝐵𝐶𝐷 и 𝐴𝐸𝐹𝐺 расположены на плоскости так, что 𝐷𝐸 = 𝐶𝐹. Прямые 𝐵𝐺, 𝐷𝐸 и 𝐶𝐹, пересекаясь, ограничивают треугольник ∆. Докажите, что этот треугольник равнобедренный.
Доброго вам утра ☀️, бодрого дня ☕️ и уютного вечера 🧸
The regulator said it has been undertaking several campaigns to educate the investors to be vigilant while taking investment decisions based on stock tips. The gold standard of encryption, known as end-to-end encryption, where only the sender and person who receives the message are able to see it, is available on Telegram only when the Secret Chat function is enabled. Voice and video calls are also completely encrypted. "Like the bombing of the maternity ward in Mariupol," he said, "Even before it hits the news, you see the videos on the Telegram channels." "For Telegram, accountability has always been a problem, which is why it was so popular even before the full-scale war with far-right extremists and terrorists from all over the world," she told AFP from her safe house outside the Ukrainian capital. He adds: "Telegram has become my primary news source."
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