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勾股定理毕达哥拉斯学派证明
Author:
李洋
GeoGebra
New Resources
三角函数 的副本
折扣
平行線的判定
百分數及其應用
撒针估算面积实验
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ie 2
線性組合3：正方形
長方形
外擺線
圓餅圖的副本
Discover Topics
Planes
Addition
Diagrams
Piecewise Functions
General Quadrilateral