Mathematics, 25.07.2021 22:10 slrich21

Cho tam giác ABC vuông tại A kẻ AH vuông góc với BC trên tia đối của tia AH lấy điểm D sao cho AD=AH gọi E là trung điểm củaHC DE cắt AC tại F chứng minh F là trọng tâm tam giác DHC

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Cho tam giác ABC vuông tại A kẻ AH vuông góc với BC trên tia đối của tia AH lấy điểm D sao cho AD=AH...

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