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gougudingli
Author:
汪丽
GeoGebra
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椭圆内切圆链
球体的截面
平行線的判定
龙形曲线-分形龙
斐波那契螺旋弧线(表格法)
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邊長與三角形 數學教室(1/4)
中心对称的概念
算幾不等式
橢圓1--同心圓法
任務4的副本
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Cuboid
Numbers
Trapezoid
Matrices
Inequalities