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椭圆的定义
Author:
guomenglin
Topic:
Ellipse
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
畫出對稱圖形
兩組對邊相等和有直角的四邊形
三位數除以一位數（二）
錐體建築師
Discover Resources
Angles at the same segment
數學模型
球面上的座標架
題三
三角碎形
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Random Variables
Parabola
Linear Programming or Linear Optimization
Rhombus
Linear Equations