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hosivanktdc
2 năm trước
Cho ABC vuông tại A, đường cao AH, AB = 16cm, AC = 12 cm Tính độ dài CH, AH, số đo Kẻ HF vuông góc với AC, lấy M là trung điểm CH, MF cắt BA tại K. Chứng minh cân?
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