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有權重的抽籤系統
Author:
李冠邑
GeoGebra
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撒针估算面积实验
圓的基本性質
双心四边形
常见四边形是否是双心四边形
圓的切線方程
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soccer
整數或分數÷分數_ 工作紙（一）_題2a
Equal Angles, Equal Arcs and Equal Chords
圆锥曲线
sin(x) 的函數圖形 的複本
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Distributions
Fractal Geometry
Parabola
Straight Lines
Complex Numbers