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極座標 r=cos(Θ / 2)
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GEOGEBRA啟
GeoGebra
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平行線的判定
正方形雪花图案
双心四边形
圓周公式的應用
比較五件物件的重量
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基本圖形面積
改變橢圓的形狀
congruent (SA) 2
时钟 的副本
小五_近似值
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Probability
LCM and GCD
Surface
Cylinder
Linear Functions