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几何模版：线段关系练习
Author:
宋晓燕
GeoGebra
New Resources
柱體建築師
兩位數加法
三位數除以一位數（一）
錐體建築師
三位數除以一位數（二）
Discover Resources
Slope of a St. Line (formula)
認識GeoGebra--相似三角形
過圓內c點的弦中點軌跡
Homework8
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Discover Topics
Right Triangles
Integral Calculus
Set Theory
Triangles
Definite Integral