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測試1
Author:
shihfeng
test
GeoGebra
New Resources
柱體建築師
拼砌四邊形
球體建築師
兩位數除以一位數（二）
三位數除以一位數（二）
Discover Resources
Demo
testing2
點到直線距離4：同心圓擴大
三次函數01
畢氏三元數
Discover Topics
Vectors 3D (Three-Dimensional)
Geometry
Arithmetic Mean
Interest Calculation
LCM and GCD