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数学勾股定理
Author:
xuhao
GeoGebra
New Resources
第三周作业效果演示
常见四边形是否是双心四边形
圓的切線方程
撒针估算面积实验
百分數及其應用
Discover Resources
內切圓滾動更新
扇形柱(調整底面圓的分割數，柱高)
國旗
艾薛爾Escher
折扣
Discover Topics
Triangles
Cylinder
Functions
Trapezoid
Tangent Line or Tangent