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Author:
Ho-Kai Chen
GeoGebra
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斐波那契螺旋弧线（表格法）
常见四边形是否是双心四边形
盈利與虧蝕
第八周作业
第八周作业2
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時間
sin 的泰勒展開式
畫圖用底圖(含輔助格線)
洋葱初中数学
定理介紹：切線性質 | Tangent Properties
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Centroid or Barycenter
Functions
Rhombus
Triangles
Geometric Distribution