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相同圖形的拼砌（三角形）
Author:
ho ting chit
Topic:
Triangles
GeoGebra
New Resources
撒针估算面积实验
折扣
双心四边形
常见四边形是否是双心四边形
平行線的斜率
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something wrong...
雙變數函數極限
平行線
Area of triangle with different base
雙心運動
Discover Topics
Median Value
Plane Figures or Shapes
Trigonometry
Isosceles Triangles
Parabola