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[洋葱] 平行线分线段成比例(0530)
Author:
acchu
GeoGebra
New Resources
柱體建築師
画直线等分三角形的面积
畫出對稱圖形
兩組對邊相等和有直角的四邊形
兩位數除以一位數（一）
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國中數學
數學作圖
分數乘法與除法
Exponential graph
两个经典不等式
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Random Variables
Volume
Set Theory
Centroid or Barycenter
Rotation