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illusion1
Author:
陈瑾
GeoGebra
New Resources
畫出對稱圖形
三位數除以一位數(一)
兩組對邊相等和有直角的四邊形
判斷球體
找出對稱軸
Discover Resources
強森定理強森定理
ie 7
二元线性规划的图解法(习题3)
利用頂點描述二次函數 的複本
任意正N边形在圆内滚动顶点的轨迹
Discover Topics
Rectangle
Statistics
Natural Numbers
Parallelogram
Difference and Slope