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重心
Author:
湯士賢
GeoGebra
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【案例】2013年安徽高考15题
画直线等分三角形的面积
找出對稱軸
GeoGebra笔记功能体验课件
兩組對邊相等和有直角的四邊形
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t6 geobra
複息的威力
腳踏車
Sangaku
時鐘與數學
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Complex Numbers
Algebra
Dilation
Integral Calculus
Logarithm