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GeoGebra
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GeoGebra
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Author:
Yan Dongtai(严东泰)
GeoGebra
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百分數及其應用
撒针估算面积实验
折扣
平行線的判定
第八周作业1
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國道計程收費
畫三角形 題2a
sghf
滑桿動晝
P5三角形的面積
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Polygons
Multiplication
Similar Triangles
Reflection
Calculus