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Author:
凉 清
GeoGebra
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三角函数 的副本
第八周作业
龙形曲线-分形龙
撒针估算面积实验
活动三：应用性质
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變色孔雀
反正切函數
Arcs and Angles at Centre/ Circumference 弧、圓心角與圓周角
gjh-e01-02 未知數邊長的長方形
蜥蜴
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Conic Sections
Incircle or Inscribed Circle
Prism
Sine
Line Segment