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Угол между касательной и хордой
Отвечая на вопросы под апплетом и двигая ползунок, проследите шаги доказательства теоремы об угле между касательной и хордой.
1.Чему равен угол FEA? Почему?
2. Чему равны углы FAE, AFE, и дуга АЕ? Почему?