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PMC 2014-15 Q3
Author:
Arthur Lee
圖中圓形的數目隨n的大小而改變。當n＝6，圖中應該有多小個圓？
GeoGebra
New Resources
sanjiaohanshu
近似值：有效數字
四邊形的特性
球體建築師
兩組對邊相等的四邊形
Discover Resources
國旗
Trianglar prism
包絡線
時針與分針的夾角
拋物線2-焦點法
Discover Topics
Incircle or Inscribed Circle
Triangles
Root
Geometry
Geometric Transformations