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Author:
cktsang
permutation (chi. ver.)
GeoGebra
New Resources
球體建築師
柱體建築師
四邊形的特性
拼砌四邊形
錐體建築師
Discover Resources
An angle problem
三角形中線定理求最小值
遞迴
圓外角測試
随机模拟实验（撒豆子估算π）的副本
Discover Topics
Function Graph
Triangles
Pythagoras or Pythagorean Theorem
Sine
Geometric Distribution