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橢圓的定義
Author:
JutorMath
GeoGebra
New Resources
拼砌四邊形
小数 的副本
長方體平面投影 (Codex版)
畫出對稱圖形
直角坐標平面上的旋轉變換
Discover Resources
task1
方向餘弦
利用对称求线段和最值（移动端）
Frequency Change
Illusion-内凹的正方形
Discover Topics
Dilation
Circumcircle or Circumscribed Circle
Rotation
Straight Lines
Confidence Interval