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莱洛三角形的互滚
Author:
孟宝兴
GeoGebra
New Resources
異分母分數減法
兩組對邊相等的四邊形
【案例】2018年全国1卷理科12题
錐體建築師
【案例】2013年安徽高考15题
Discover Resources
eye tracing
畢氏定理
Volume of pyramid from a cube
對稱之美
旋轉橢圓
Discover Topics
Incircle or Inscribed Circle
Rectangle
Linear Regression
Coordinates
Rotation