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351785612568389
2 năm trước
giải hộ mk nhé 5sao nè và câu tlhn cho ai nhanh nhất và đúng nè, mn nhớ giải cách mà dễ hiểu nhất nhé :3 iu mn nhớ giúp mk nhé cho ΔABC vuông tại A (AB<AC),phân giác BE ( E ∈ AC) , kẻ EH ⊥ BC ( H ∈ BC ) a) c/m ΔBAE = ΔBHE b) đường thẳng EH cắt đường thẳng AB tại K . c/m ΔKEC cân c)c/m BE ⊥ CK d) chứng tỏ EC>AK
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