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等腰三角形求角度
Author:
普华祥
,
arist
GeoGebra
New Resources
【案例】2013年安徽高考15题
兩組對邊相等和有直角的四邊形
判斷球體
画直线等分三角形的面积
兩位數除以一位數（一）
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拋物線規
圆锥曲线定义的拓展（卡西尼卵形线）
Ex5C#8
拋物線2-焦點法
Quiz on Addition and Subtraction of Directed Numbers (2)
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Kite
Combinatorics
Distributions
Equations
Real Numbers