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gdss
Author:
Ng Cheuk Hei
GeoGebra
New Resources
畫出對稱圖形
【案例】2013年安徽高考15题
兩組對邊相等和有直角的四邊形
找出對稱軸
兩位數除以一位數（二）
Discover Resources
Ambiguous Cylinder illusion
雙曲線的幾何性質
雙曲線3 等軸法
數織Nonogram
以「時」和「分」報時 的複本
Discover Topics
Dilation
Isosceles Triangles
Tangent Line or Tangent
Quadratic Equations
Cuboid