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多边形对角线
Author:
张英华
GeoGebra
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画直线等分三角形的面积
圓的基本性質
探究三角形的全等條件
斜率的值
祖冲之的期望：内棋与外棋
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正餘弦函數的疊合102.11.27
二維碰撞
圓方程式
Ex5D#5
圖解直式開方
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Correlation
Addition
Limits
Linear Regression
Pythagoras or Pythagorean Theorem