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分數加法
Author:
iedc
GeoGebra
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正方形雪花图案
折扣
科赫雪花
湖南省中职数学教师省培(GeoGebra培训案例)
中华人民共和国国旗
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Task 4 Square
畢氏定理的證明
vector
cos(π/n)cos(2π/n)cos(3π/n) ... cos(nπ/n) = ?
sin(x) 的函數圖形的副本
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Rotation
Intersection
Logic
Addition
Functions