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Author:
许业成
GeoGebra
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百分數及其應用
常见四边形是否是双心四边形
龙形曲线-分形龙
斐波那契螺旋弧线（表格法）
第八周作业
Discover Resources
a>1, y=Log(a,x) and y=a^x 有可能0,1,2交點!?
Symmetric設計對稱圖案(一條對稱軸)
正方體
探究棱錐的體積
劉虹圻 內心
Discover Topics
Probability
Trapezoid
Arithmetic
Power Functions
Complex Numbers