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平行的角度
Author:
周桂名
兩平線的角度關係！ 看不出來，移動M點試試！
GeoGebra
New Resources
画直线等分三角形的面积
【案例】圆柱体内放置一个大球六个小球
【案例】2013年安徽高考15题
漂亮的摇摆曲线
垂直線的斜率
Discover Resources
Basketball
圖G
Classifying Quadrilaterals
Copy of 七巧板綜合
方形地毯
Discover Topics
Vectors 3D (Three-Dimensional)
Rhombus
Tree Diagrams
Curve Sketching
Mathematics