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circle: line from centre
Author:
Ng Ching Yi
GeoGebra
New Resources
Fibonacci Clock
兩組對邊相等和有直角的四邊形
Nested spiral octagon
Earth with coastline
直角坐標平面上的旋轉變換
Discover Resources
卡特蘭數 (Catalan Number)
三角函數的繪圖2
平行四邊形堆朵
外心(劉虹圻 高二三26)
直线与平面垂直的折纸实验
Discover Topics
Circumcircle or Circumscribed Circle
Quadratic Equations
Dilation
Random Variables
Equilateral Triangles