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  • 09-04-2024
  • Mathematics
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Cho lăng trụ đứng ABC.A’B’C’ có đáy ABC là tam giác với AB=a, AC=2a và BAC=120°,AA'=2a√5. Gọi I,K,M lần lượt là trung điểm của BB', CC', IB'. khoảng cách từ M đến ( ABB'A' )

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