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樞紐定理
Author:
曾己泉
GeoGebra
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画直线等分三角形的面积
球体的体积推导
兩位數加法
兩組對邊相等的四邊形
兩位數除以一位數（二）
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GGB研習繪本
過圓內一點與圓相切的圓
向量比換面積比
gjc100a34 兩三角形重疊面積比
解不等式
Discover Topics
Frequency Distribution
Polynomial Functions
Median Value
Vectors 3D (Three-Dimensional)
Set Theory