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中点轨迹
Author:
DongHai Zhang
中点轨迹
GeoGebra
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球体的体积推导（优化版）
画直线等分三角形的面积
拼砌四邊形
兩組對邊相等的四邊形
三位數除以一位數（二）
Discover Resources
Proof of Pythagoras Theorem(1) 畢氏定理的証明(1)
Sequence指令練習(n的平方根)
【範本】資料整理與統計圖表─盒狀圖
指數的對稱
橢圓1-同心圓法
Discover Topics
Solids or 3D Shapes
Similarity Transformation or Similarity
Similar Triangles
Median Line
Translation