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GeoGebra
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1.7
Author:
杜耀宗
GeoGebra
New Resources
垂直線的斜率
兩位數除以一位數(二)
空间中两直线的位置关系
三位數除以一位數(二)
祖冲之的期望:内棋与外棋
Discover Resources
triangle
坐标变换
Testing 20170308
Double Integral
旋轉圓弧
Discover Topics
Limits
Isosceles Triangles
Sphere
Arithmetic Operations
Arithmetic