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平行四邊形和長方形的大小
Author:
杜寶茵
GeoGebra
New Resources
GeoGebra笔记功能体验课件
球體建築師
判斷球體
找出對稱軸
球体的体积推导（优化版）
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判斷線型函數y=f(x)=ax+b的a值
累積頻數多邊形
圍周
數學傳播39卷4期, 平面幾何公式思考
與兩圓相切之圓心雙曲線軌跡
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Trigonometric Functions
Matrices
Correlation
Ellipse
Hyperbola