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優良作品3
Author:
Ching-Hui Chou
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
柱體建築師
球体的体积推导（优化版）
球体的体积推导
Discover Resources
較複雜的周界問題(一)
正方体截面
更相减损术几何表示
圓與弦2的副本
分段函数动点轨迹
Discover Topics
Centroid or Barycenter
Polynomial Functions
Square
Intersection
Piecewise Functions