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角α与-α的正弦函数关系
Author:
lelove2212
验证:角α与-α的正弦函数关系
GeoGebra
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第八周作业3
科赫雪花
龙形曲线-分形龙2
斐波那契螺旋弧线(表格法-可动态调节)
异形操场
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數的組合 (簡易)
我的第一個GGB動畫
Apollonius Problem kissing coin problem
Copy of 3S2 01a 平行四邊形 20151207
平行四边形面积演示
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Geometric Mean
Quadrilaterals
Sequences and Series
Probability
Histogram