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gyzel 橢圓的反射
Author:
均一
GeoGebra
New Resources
拼砌四邊形
兩組對邊相等的四邊形
画直线等分三角形的面积
三位數除以一位數(二)
兩位數除以一位數(二)
Discover Resources
分水問題
旋轉4
Copy of 球面
test007
正弦函数自变量的几何显示
Discover Topics
Plane Figures or Shapes
Right Triangles
Arithmetic
Perimeter
Trigonometry