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Câu 27:

Cho tam giác $ABC$

Câu 27: Cho tam giác ABCABCABC cân ở AAA, đường cao AHAHAH. Khẳng định nào sau đây sai?

Thông tin câu hỏi

Câu 27:

Cho tam giác $ABC$ cân ở $A$ , đường cao $AH$ . Khẳng định nào sau đây sai?