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GeoGebra
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橢圓
Author:
洪宜慧
GeoGebra
New Resources
椭圆内切圆链
平行線的判定
折扣
异形操场
撒针估算面积实验
Discover Resources
二次函數的圖形
總結
測試
二倍角公式證明
三次函數
Discover Topics
Sphere
Logarithmic Functions
Ellipse
Prism
Similar Triangles