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2 năm trước
Cho tam giác ABC vuông tại A,AB=6cm,AC=8cm.Vẽ đường cao AH a) Cm: ΔAHB đồng dạng ΔCAB b) Tính độ dài AH và HB c) Lấy điểm D bất kiều trên cạnh AC (D khác A và C).Kẻ đường thẳng vuông với HD tại H cắt AB tại E.CM ΔBHE đồng dạng ΔAHD và góc BAH=góc EDH Mn giúp em với ạ vẽ hình giúp em nx nha
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