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Author:
choichiheng
GeoGebra
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兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
兩位數加法
画直线等分三角形的面积
【案例】2018年全国1卷理科12题
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曲柄搖桿
Angle (Extended 2)
象限
F4_Ch9.1
正方体与球面的相交曲面
Discover Topics
Statistics
Subtraction
Plane Figures or Shapes
General Quadrilateral
Bar Chart or Bar Graph