載入中... 相關課程 Back 【尺規作圖】找到三角形的外心並畫出外接圓 登入觀看 ⇐ Use this menu to view and help create subtitles for this video in many different languages. You'll probably want to hide YouTube's captions if using these subtitles. 【尺規作圖】找到三角形的外心並畫出外接圓 上傳學習單 下載學習單