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三節棍
Author:
chen mingchuan
GeoGebra
New Resources
柱體建築師
画直线等分三角形的面积
【案例】2013年安徽高考15题
畫出對稱圖形
找出對稱軸
Discover Resources
waaachen
Trajectory of system: y'=y^2-y
四下_面積（一）(學生版)
時鐘
初中数学教材配套资源【人教】
Discover Topics
Parallelogram
Diagrams
Congruence
Root
Unit Circle