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正6展開
Author:
Wu Xiao-Ren
GeoGebra
New Resources
龙形曲线-分形龙
斐波那契螺旋弧线（表格法-可动态调节）
第三周作业效果演示
第八周作业
平行線的判定
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高中數學_高二上
和的完全平方
平行四邊形的特性
Rotation
gjc090c21內切圓的圓心
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Multiplication
Statistics
Equilateral Triangles
Similar Triangles
Vectors