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Mathematics, 29.07.2021 14:40 tinyturtles

Cho tứ diện ABCD, trên cạnh AB lấy điểm M, trong ∆BCD lấy điểm N. a) Tìm giao điểm P của BC với (DMN)

b) Tìm giao điểm I của AC với (DMN)

c) Tìm giao điểm K của MN với (ACD)

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