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凹透镜
Author:
myao1999
GeoGebra
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湖南省张毅郴数字教研工作室 logo
四邊形的特性
判斷球體
兩組對邊相等的四邊形
拼砌四邊形
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三心：與三角形形狀的關係
圓周 (圖形B)
軌跡方程式-垂直切線
軌跡練習1
勾股定理：射影无字证明
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Incircle or Inscribed Circle
Ratios
Set Theory
Subtraction
Integral Calculus