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椭圆的定义
Author:
guomenglin
Topic:
Ellipse
GeoGebra
New Resources
柱體建築師
兩組對邊相等的四邊形
錐體建築師
找出對稱軸
【案例】2013年安徽高考15题
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初中八年级奥数:面积与面积法
HANK2
周界
F1Ch8 Translation basic
我的第一个GGB绘本
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Derivative
Optimization Problems
Integers
Statistical Characteristics
Plane Figures or Shapes