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Câu 4:

Cho hình chóp S.ABC có $SA \bot \left( {ABC} \right)$

Câu 4: Cho hình chóp S.ABC có SA⊥(ABC)SA \bot \left( {ABC} \right)SA⊥(ABC), tam giác ABC cân tại A, H là trung điểm cạnh BC. Khẳng định nào sau đây đúng ?

Thông tin câu hỏi

Câu 4:

Cho hình chóp S.ABC có $SA \bot \left( {ABC} \right)$ , tam giác ABC cân tại A, H là trung điểm cạnh BC. Khẳng định nào sau đây đúng ?