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三角函数我需要的
Author:
李东
GeoGebra
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平行線的判定
龙形曲线-分形龙
异形操场
斐波那契螺旋弧线(表格法-可动态调节)
撒针估算面积实验
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正n多邊形面積逼近圓面積
Apollonius Problem 4 LLP Power 12
轨迹2016.4.16
Subdivision
二次函數圖形01
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Similar Triangles
Special Points
Volume
Division
Algebra