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tragnguyen1511
2 năm trước
Cho tam giác ABC có góc A = 90độ. Đường thẳng AH vuông góc với BC tại H. Trên đường vuông góc với BC tại B lấy điểm D không cùng nửa mặt phẳng bờ BC với điểm A sao cho AH = BD. a) Chứng minh tam giác AHB = tam giác DBH b) Hai đường thẳng AC và DH có vuông góc với nhau không, tại sao? c) Tính góc ACB biết góc BAH = 35độ Mọi người giải giúp em em cảm ơn ạ!!!
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