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圆锥曲线
Author:
冯伟冀
GeoGebra
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【案例】2013年安徽高考15题
三位數除以一位數（一）
判斷球體
找出對稱軸
第八周作业
Discover Resources
任務3
動態畢氏定理
記錄最大值
物件顯示條件
橢圓規Ellipsograph of Parallelogram
Discover Topics
Arithmetic Mean
Straight Lines
Addition
Reflection
Median Line