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線對稱圖形練習1
Author:
真呷意
請做出下列圖形對稱於直線L的線對稱圖形
GeoGebra
New Resources
第八周作业
兩位數除以一位數（一）
錐體建築師
兩位數加法
球体的体积推导（优化版）
Discover Resources
證明三角形內角和180度
七角柱(可側轉、上下轉)
[S2] a revised version of Jane’s GeoGebra file (modified by the author)
對稱之美
洋葱初中数学
Discover Topics
Tangent Line or Tangent
Algebra
Continuity
Poisson Distribution
Curve Sketching