Ptt 大爆卦 | Ellipsis 中文 - 前往 https://www.facebook.com/Dailycold/photos/%E5%BE%AE%E5%86%B7-%E7%82%BA%E4%BD%95%E4%B8%89%E7%A8%AE%E5%9C%93%E9%8C%90%E6%9B%B2%E7%B7%9Aconic-section%E5%89%9B%E5%A5%BD%E5%92%8C%E4%BF%AE%E8%BE%AD%E6%B3%95rhetoric%E6%9C%89%E4%B8%80%E6%A8%A3%E7%9A%84%E5%90%8D%E5%AD%97-%E5%90%84%E4%BD%8D%E8%AE%80%E8%80%85%E8%90%AC%E7%A6%8F%E9%87%91%E5%AE%89%E6%99%9A%E4%B8%8A%E5%A5%BD-%E6%8A%8A%E4%B8%80%E5%80%8B%E6%99%AE%E9%80%9A%E7%9A%84%E5%9C%93%E9%8C%90%E9%AB%94%E7%94%A8%E6%AD%A6%E5%A3%AB%E5%88%80%E5%88%87%E9%96%8B%E5%A6%82%E6%9E%9C%E5%88%87%E9%9D%A2%E5%92%8C%E5%B0%8D%E7%A8%B1%E8%BB%B8/3087340101338372/

你即將離開本站

並前往https://www.facebook.com/Dailycold/photos/%E5%BE%AE%E5%86%B7-%E7%82%BA%E4%BD%95%E4%B8%89%E7%A8%AE%E5%9C%93%E9%8C%90%E6%9B%B2%E7%B7%9Aconic-section%E5%89%9B%E5%A5%BD%E5%92%8C%E4%BF%AE%E8%BE%AD%E6%B3%95rhetoric%E6%9C%89%E4%B8%80%E6%A8%A3%E7%9A%84%E5%90%8D%E5%AD%97-%E5%90%84%E4%BD%8D%E8%AE%80%E8%80%85%E8%90%AC%E7%A6%8F%E9%87%91%E5%AE%89%E6%99%9A%E4%B8%8A%E5%A5%BD-%E6%8A%8A%E4%B8%80%E5%80%8B%E6%99%AE%E9%80%9A%E7%9A%84%E5%9C%93%E9%8C%90%E9%AB%94%E7%94%A8%E6%AD%A6%E5%A3%AB%E5%88%80%E5%88%87%E9%96%8B%E5%A6%82%E6%9E%9C%E5%88%87%E9%9D%A2%E5%92%8C%E5%B0%8D%E7%A8%B1%E8%BB%B8/3087340101338372/

就會切出一個橢圓形[圖中綠]；當刀的斜度剛好等於頂角的一半

圓、橢圓（ellipse）、拋物線（parabola）、雙曲線（hyperbola）這四種「圓錐 ... 中文刪節號有六點，英文只有三點，財哥專業檳榔攤要幾點有幾點。

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