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直線系
Author:
RueiYi
GeoGebra
New Resources
sanjiaohanshu
算柱 (兩位數)
直角坐標平面上的旋轉變換
近似值：有效數字
兩組對邊相等的四邊形
Discover Resources
Properties of a Rectangle
水波干涉
Triangle (Angle)
含有任意量词与存在量词的最值问题
活工(一)Q4
Discover Topics
Centroid or Barycenter
Vectors
Sine
Random Experiments
Linear Programming or Linear Optimization