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Author:
赵林
GeoGebra
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兩組對邊相等的四邊形
【案例】2018年全国1卷理科12题
画直线等分三角形的面积
異分母分數減法
四邉形 (四年級) 教師版
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waaachen
kevin
分割
Geogebra學習檔案
locus of a segment
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Congruence
Centroid or Barycenter
Square
Exponential Functions
Differential Equation