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台球反射
Author:
朱亮
GeoGebra
New Resources
畫出對稱圖形
四邊形的特性
直角坐標平面上的旋轉變換
三位數除以一位數（一）
兩組對邊相等和有直角的四邊形
Discover Resources
謝爾賓斯基三角形 (Sierpinsky)
Linear Inequalities in Two Unknowns 二元一次不等式
正方體的反射對稱3
面積
simulation of the uniform variable linear motion
Discover Topics
Perimeter
Normal Distribution
Fractions
Plane Figures or Shapes
Geometry