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so fing
Author:
martic1101
GeoGebra
New Resources
圓的切線方程
平行線的判定
盈利與虧蝕
折扣
常见四边形是否是双心四边形
Discover Resources
testing
自我練習
偏心的農夫?
算幾不等式
弹簧振子的 简谐运动
Discover Topics
Conic Sections
Division
Orthocenter
Polynomial Functions
Rectangle