載入中... 相關課程 Back S-8-7-S04_會計算邊長為a之正三角形的面積為√3/4×a2。 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. S-8-7-S04_會計算邊長為a之正三角形的面積為√3/4×a2。 上傳學習單 下載學習單