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弦中點
Author:
薛瑛萱
GeoGebra
New Resources
三位數除以一位數（二）
【案例】2013年安徽高考15题
兩組對邊相等的四邊形
第八周作业
找出對稱軸
Discover Resources
競賽題-1
題九
P4菱形定義
Copy of 正方體的反射對稱1
我的第一个GGB绘本
Discover Topics
Fractions
Plane Figures or Shapes
Prism
Scatter Plot
Vectors 2D (Two-Dimensional)