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Author:
Keung
GeoGebra
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龙形曲线-分形龙
第八周作业3
科赫雪花
斐波那契螺旋弧线（表格法-可动态调节）
第八周作业1
Discover Resources
立體圖
永遠垂直、以像素為單位的向量？
三角形的工具
旋转直角
test22
Discover Topics
Definite Integral
Linear Programming or Linear Optimization
Parametric Curves
Logarithmic Functions
Constructions