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外心
Author:
Bennie Liu
GeoGebra
New Resources
找出對稱軸
画直线等分三角形的面积
算柱 (兩位數)
畫出對稱圖形
拼砌四邊形
Discover Resources
f(x) and f(-x)
three
捷徑
fabunaci1060323
我的第一个GGB绘本
Discover Topics
Vectors
Triangles
Sphere
Median Line
Derivative