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聯立方程式
Author:
liangcorn
GeoGebra
New Resources
双心四边形
第八周作业
直線的斜率：水平變化 & 鉛垂變化
平行線的判定
龙形曲线-分形龙
Discover Resources
集合
餘弦定理
combos ()
Animation of Refraction
畢氏定理證明（Ｉ）
Discover Topics
Parabola
Area
Cube
Numbers
Cylinder