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轨迹2016.4.16
Author:
DongHai Zhang
三角形内心
GeoGebra
New Resources
算柱 (兩位數)
画直线等分三角形的面积
直角坐標平面上的旋轉變換
【案例】2013年安徽高考15题
兩位數加法
Discover Resources
Addition / Subtraction of 3 Directed Numbers
時鐘小幫手
GGB6
題 1
分数整体与部分为单位1的线段图示
Discover Topics
Volume
Mathematics
Kite
General Quadrilateral
Inequalities