Cau 5.cho hình chóp s. abcd có đáy abcd là hình bình hành , tâm o. gọi m là
trung diem sc
...
Mathematics, 01.12.2019 06:31 Shybaby5019
Cau 5.cho hình chóp s. abcd có đáy abcd là hình bình hành , tâm o. gọi m là
trung diem sc
a) tìm giao tuyến của mặt phẳng (sac) và (sbd); (sab) và (scd):
b) tìm giao điểm của am và (sbd)
c) chứng minh rằng: om // (sab).
Answers: 1
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