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轨迹19
Author:
万超杰
GeoGebra
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双心四边形
圓的基本性質
撒针估算面积实验
龙形曲线-分形龙2
盈利與虧蝕
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以剪貼比較圖形大小
極座標
箭頭引導法計算文字乘以文數字
Geogebra 入门
圆周展开
Discover Topics
Division
Geometry
Exponential Functions
Tangent Function
Cube