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正12面體
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GEOGEBRA啟
GeoGebra
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兩位數除以一位數（二）
GeoGebra笔记功能体验课件
畫出對稱圖形
画直线等分三角形的面积
兩位數除以一位數（一）
Discover Resources
过圆上一点作切线，三步
線性規劃xgeogebra
How to draw a triangle with ruler and compasses?
一道三视图的题目（三视图作法参考）
滑桿4
Discover Topics
Special Points
Secant Line or Secant
Quadrilaterals
Perimeter
Pythagoras or Pythagorean Theorem