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Mathematics, 17.10.2021 08:30 carolinagarciap8kgmi

Bài 2: Cho tứ diện ABCD (chọn đỉnh là B). Gọi E, F lần lượt là các điểm nằm bên trong tam giác BAD và BCD a)Tìm giao tuyến của 2 mp (BEF) và (ACD)
b)Tìm giao tuyến của 2 mp (DEF) và (ABC)

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Bài 2: Cho tứ diện ABCD (chọn đỉnh là B). Gọi E, F lần lượt là các điểm nằm bên trong tam giác BAD v...
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