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圓與正方形中點軌跡1060317
Author:
陳正鴻
GeoGebra
New Resources
三位數除以一位數（一）
直線的斜率
圓的切線方程
【案例】2013年安徽高考15题
探究三角形的全等條件
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包絡線1
廣義角
等腰三角形
拋物線4-平行四邊形法
羊角螺线[Euler spiral】
Discover Topics
Rhombus
Circumcircle or Circumscribed Circle
Geometric Distribution
Definite Integral
Parallelogram