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橢圓關係
Author:
Martin Chang
GeoGebra
New Resources
【案例】2013年安徽高考15题
四邉形 (四年級) 教師版
異分母分數減法
找出對稱軸
兩組對邊相等的四邊形
Discover Resources
圓圓求切圓
利用对称求线段和最值
圖形拼砌
参数曲线
玖数小学数学（思维拓展）
Discover Topics
Conic Sections
Function Graph
Reflection
Step Functions
Addition