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Author:
Norman Wong
GeoGebra
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第八周作业1
斐波那契螺旋弧线（表格法）
中华人民共和国国旗
撒针估算面积实验
科赫雪花
Discover Resources
「相似三角形」任务4
直線交點
萬花筒
Newton's method
常见立体图形的截面
Discover Topics
Orthocenter
Plane Figures or Shapes
Histogram
Symmetry
Sequences and Series