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2-1-2-a
Author:
Joye Wang
GeoGebra
New Resources
正方形雪花图案
折扣
活动三:应用性质
撒针估算面积实验
科赫雪花
Discover Resources
waaachen
向量的垂直分解
圓與三角形
展開圖
十六菊
Discover Topics
Solids or 3D Shapes
Probability
Rhombus
Integral Calculus
Dilation