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铅笔画圆
Author:
fenqinyao
GeoGebra
New Resources
平行線的判定
常见四边形是否是双心四边形
活动三：应用性质
第八周作业
第八周作业2
Discover Resources
ggb-fs-b1 分數擴分
Apollonius Problem kissing coin problem
GeoGebra与数学教育论坛通知
畢氏定理的證明
製作四個不同的梯形
Discover Topics
Cylinder
Geometry
Derivative
Multiplication
Orthocenter