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量角器
Author:
purespirit0301
GeoGebra
New Resources
兩位數加法
三位數除以一位數（一）
錐體建築師
柱體建築師
拼砌四邊形
Discover Resources
geo123
Apollonius Problem 6 CLP Inversion 12
軌跡四︰移動點與一固定直線保持固定距離(兩平行線)
棱柱
转动中的杠杆
Discover Topics
Cosine
Intersection
Unit Circle
Circumcircle or Circumscribed Circle
Confidence Interval