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撒针估算面积实验
Author:
孟宝兴
GeoGebra
New Resources
近似值：有效數字
美國國旗 (Codex 版)
第八周作业
Claude 解幾何題
找出對稱軸
Discover Resources
Is this a prism 9
三角形
展開圖
Copy of 分數比較
電子幾何條的副本
随机模拟实验（撒豆子估算π）的副本
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Functions
Solids or 3D Shapes
Special Points
Division
Equations