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电场线模拟
Author:
陈辉
GeoGebra
New Resources
近似值：有效數字
【案例】2018年全国1卷理科12题
畫出對稱圖形
sanjiaohanshu
兩位數除以一位數（一）
Discover Resources
正方形的旋轉
task 7
指數圖形的變化
探索“三等分点连线围成的小三角形”的特点
圆周展开
Discover Topics
Angles
Tangent Function
Algebra
Ellipse
Pythagoras or Pythagorean Theorem