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優良作品2
Author:
Ching-Hui Chou
GeoGebra
New Resources
球體建築師
錐體建築師
判斷球體
球体的体积推导（优化版）
拼砌四邊形
Discover Resources
正四面體
数学教学新帮手
test01
圖形C
解不等式
Discover Topics
Difference and Slope
Median Value
Circumcircle or Circumscribed Circle
Definite Integral
Volume