Cho khối chóp tam giác S.ABC, trên các cạnh SA,SB,SC lần lượt lấy các điểm A′,B′,C′. Khi đó:
Cho khối chóp tam giác S.ABC, trên các cạnh SA,SB,SC lần lượt lấy các điểm A′,B′,C′. Khi đó:
 | Nguyễn Thị Thương | Chat Online |
| 05/09 12:34:39 (Tổng hợp - Lớp 12) |
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Số lượng đã trả lời:
| A. \[\frac{{{V_{S.A'B'C'}}}}{{{V_{S.ABC}}}} = \frac{{SA'}} + \frac{{SB'}} + \frac{{SC'}}\] 0 % | 0 phiếu |
| B. \[\frac{{{V_{S.ABC}}}}{{{V_{S.A'B'C'}}}} = \frac{{SA'}}.\frac{{SB'}}.\frac{{SC'}}\] 0 % | 0 phiếu |
| C. \[\frac{{{V_{S.A'B'C'}}}}{{{V_{S.ABC}}}} = \frac{{SA'}} = \frac{{SB'}} = \frac{{SC'}}\] 0 % | 0 phiếu |
| D. \[\frac{{{V_{S.A'B'C'}}}}{{{V_{S.ABC}}}} = \frac{{SA'}}.\frac{{SB'}}.\frac{{SC'}}\] 0 % | 0 phiếu |
| Tổng cộng: | 0 trả lời |
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