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Mathematics, 20.06.2021 22:40 damian092

Lời giải bài toán: Cho tam giác ABC có góc  = 90 0 , đường cao AH. Gọi M, N là trung điểm của AB và AC. Chứng minh rằng MH vuông góc với NH.

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Lời giải bài toán: Cho tam giác ABC có góc  = 90 0 , đường cao AH. Gọi M, N là trung điểm của AB và...
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