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極座標 r=cos(Θ / 2)
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GEOGEBRA啟
GeoGebra
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多邊形的面積
圓的切線方程
平行線的斜率
龙形曲线-分形龙
三角函数 的副本
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三角形面積、底、高的關係
畢式定理 (09)
随机分支长度的二分树
畢氏定理動畫
圓滾動
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Addition
Inequalities
Complex Numbers
Cone
Upper and Lower Sum or Riemann Sum