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三角函数 的副本
Author:
李东
GeoGebra
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直線的斜率：水平變化 & 鉛垂變化
异形操场
龙形曲线-分形龙2
撒针估算面积实验
折扣
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EnergyMath 2-3 n次方根
判斷柱體 5
角平分線製作
等腰三角形外接圓上弦AB
探究
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Cuboid
Translation
Optimization Problems
Tangent Line or Tangent
Quadrilaterals