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圆锥曲线第二定义
Author:
冯伟冀
Topic:
Conic Sections
GeoGebra
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算柱 (兩位數)
判斷球體
【案例】2013年安徽高考15题
直角坐標平面上的旋轉變換
三位數除以一位數（一）
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gtx-a01-flag-sesel-01 塞席爾國旗
ch14 p.30#31
拋物線軌跡(1)
拋物線3-平行四邊形法
圓的基本慨念的副本
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Special Points
Combinatorics
Line Segment
Vectors
Scatter Plot