Câu 11: Cho tam giác ABC vuông t?i A có AB < AC. K? tia phân giác c?a góc B c?t AC t?i D. T? C k? CH vuông góc v?i tia phân giác BD. a) Ch?ng minh r?ng \(\triangle BAD \sim \triangle CHD\). b) Ch?ng minh góc DBC b?ng góc DCH
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Let AD be the angle bisector of angle BAC. We are given that the ratio of the hypotenuse AC to the side opposite the right angle AB is √2. To prove that triangle ABC is similar to triangle ADB with angle DCA, we need to show that the corresponding angles are Show more…
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