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DANDELIN
Author:
zhou
GeoGebra
New Resources
兩位數加法
算柱 (兩位數)
三位數除以一位數（二）
兩組對邊相等的四邊形
近似值：有效數字
Discover Resources
柱體體積(三角形)
正方體交角
圓與切線
台灣國旗(I love Taiwan)
几何概型
Discover Topics
Division
Pythagoras or Pythagorean Theorem
Equilateral Triangles
Step Functions
Inequalities