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Author:
eyun306
GeoGebra
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三角函数 的副本
折扣
常见四边形是否是双心四边形
活动三：应用性质
科氏力 (Coriolis Force)
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指對數函數圖形交點個數
Direct Variation (Different powers of x)
比較角的大小
第三冊2-2習題12
平行四邊形柱算體積(可以切開)
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Cube
Angles
Mathematics
Quadratic Functions
Addition