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兩圓外公切線
Author:
郭逸民
GeoGebra
New Resources
三位數除以一位數（二）
判斷球體
四邊形的特性
找出對稱軸
畫出對稱圖形
Discover Resources
畫三角形 題1d
複合圖形(八)
圓周 (圖形F)
展開圓面積 (講義版)的副本
活工(三)Q2
Discover Topics
Unit Circle
Sine
Limits
Root
Curve Sketching