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球面與平面的交線怎麼求
球面與平面的交線怎麼求
更新时间:2025-12-26 20:16:42

  作球心到平面的距離,與平面的交點即為圓的圓心。過這個圓心的任意一條直徑與圓交點有兩個,這兩個交點再與球心連接,兩條連線是球的半徑。

  因此圓的半徑可由勾股定理得到:斜邊是球的半徑,一條直角邊是球心到平面的距離,另一條直角邊是圓的半徑。

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