Mathematics
Senior High
Resolved
求解此題
如圖所示,有一金字塔,其底面是一正方形,其
餘四面則是正三角形,其長皆為80公尺。在AD
A
F
40
E
·D
所:丽=40
的中點F處有一入口,且從點到B點之間有一 S
條筆直的通道,試求此通道之長。(提示:可設立
OCT 0=+
空間坐標系)
類,
------
B.
例題2延伸
AA
C
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