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Angle at centre twice angle at circumference
Author:
Big Lee
GeoGebra
New Resources
三位數除以一位數（一）
異分母分數減法
兩組對邊相等的四邊形
【案例】圆柱体内放置一个大球六个小球
找出對稱軸
Discover Resources
圓錐曲線
相似三角形: 重溫
弦的定理
Euler line 2
椭圆的两条垂直切线的交点轨迹
Discover Topics
Median Line
Quadrilaterals
Similar Triangles
Circumcircle or Circumscribed Circle
Cosine