Mathematics, 16.12.2021 14:00 Giovanni0312

Cho hình chóp S. ABCD có đáy là hình bình hành. Gọi F, G lần lượt là trung điểm của SA, BC . Chứng minh FG // (SDC)

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Cho hình chóp S. ABCD có đáy là hình bình hành. Gọi F, G lần lượt là trung điểm của SA, BC . Chứng m...

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