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可拖动A、B 改变形状
Author:
孟宝兴
GeoGebra
New Resources
拼砌四邊形
【案例】2013年安徽高考15题
四邊形的特性
直角坐標平面上的旋轉變換
球體建築師
Discover Resources
正二十面體
角度比較
ghseh 二次函數描點法上下平移-5
angle sum of triangle
餘角
Discover Topics
Histogram
LCM and GCD
Vectors
Set Theory
Special Points