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Angle in semi-circle
Author:
Leo Chui
GeoGebra
New Resources
第八周作业2
第八周作业
龙形曲线-分形龙2
斐波那契螺旋弧线（表格法-可动态调节）
第八周作业1
Discover Resources
向量
相似形
vector
橢圓與斜率
垂心(劉虹圻623)
Discover Topics
Sphere
Statistical Characteristics
Subtraction
Curve Sketching
Constructions