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[几何] 四面体A-BCD,角BAC = 角BAD = 角CAD的种种

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郝酒 Posted 2013-12-26 15:24 |Read mode

A的轨迹能不能求出来？或者A点在BCD的射影是否是特殊点？

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其妙 Posted 2013-12-26 23:44

Last edited by 其妙 2013-12-27 12:34回复 1# 郝酒
你的意思是$\triangle{BCD}$已经确定了吧？

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Author| 郝酒 Posted 2013-12-27 10:07

是的。

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