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Mathematics, 10.12.2021 06:30 dion27
Câu 6: Cho tam giác ABC vuông tại A (AB < AC). Vẽ AH ⊥ BC (H ∈ BC). Lấy điểm K
trên tia HC sao cho: HK = BH. Qua K kẻ đường thẳng vuông góc với AC tại I (I ∈ AC),
đường thẳng đó cắt tia AH tại E
a) Chứng minh ∆ AHB = ∆ AHK;
b) Chứng minh: EI // AB;
c) Chứng minh: AH = HE
d) Lấy điểm D trên đoạn CE sao cho CD = CI. Chứng minh 3 điểm A, K, D thẳng hàng
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Câu 6: Cho tam giác ABC vuông tại A (AB < AC). Vẽ AH ⊥ BC (H ∈ BC). Lấy điểm K
trên tia HC sao...
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