Mathematics, 18.03.2021 02:20 kitttimothy55

Cho tam giác ABC cân tại A và M là trung điểm của BC Kẻ MH và MK lần lượt vuông góc với AB và AC H thuộc AB K thuộc AC a) chứng minh tam giác MBH bằng tam giác MCK b) cho BC = 8 cm và BH = 3 cm Tính cạnh MK c) Chứng minh HK song song với BC d) cho HK = 1/2 BC TAM GIAC ABC .Khi đó tam giác ABC là tam giác gì? Vì sao?

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Cho tam giác ABC cân tại A và M là trung điểm của BC Kẻ MH và MK lần lượt vuông góc với AB và AC H t...

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