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相切的三圓
Author:
高淑蓉
GeoGebra
New Resources
圓的切線方程
平行線的斜率
斜率的值
圓的基本性質
龙形曲线-分形龙2
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銀杏葉
Ambiguous Cone
Copy of 平行四邊形面積
二次函數的圖形的副本
我的第一个GGB绘本
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Arithmetic
Area
Calculus
Geometric Distribution
Sequences and Series