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Author:
Ricky Chan
GeoGebra
New Resources
兩組對邊相等的四邊形
柱體建築師
判斷球體
兩位數除以一位數（一）
球體建築師
Discover Resources
函數切線及法線
旋轉體 (Disk Method)
圓錐截痕
HW question locus 2
小五_多邊形面積01
Discover Topics
Quadratic Equations
Pythagoras or Pythagorean Theorem
Centroid or Barycenter
Rotation
Division