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2. 开始菜单
Author:
GeoGebra Institute of WuXi
New Resources
球體建築師
判斷球體
三位數除以一位數（一）
兩組對邊相等和有直角的四邊形
找出對稱軸
Discover Resources
Area of Triangle_1
固定三角形的條件−題4
Angle between line & plane
GeoGebra研習作品
外心
Discover Topics
Triangles
Tangent Line or Tangent
Centroid or Barycenter
Sine
Hypothesis Testing
