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齒輪作圖
Author:
Lin Ching Chieh
GeoGebra
New Resources
近似值：有效數字
找出對稱軸
四邊形的特性
畫出對稱圖形
長方體平面投影 (Codex版)
Discover Resources
圓周
拋物線規
中線定理(阿波羅尼奧斯)定理推廣二：向四邊形推廣
百分位數、四分位數和中位數
椭圆的两条垂直切线的交点轨迹
Discover Topics
Kite
Median Line
Conic Sections
Centroid or Barycenter
Variance