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橢圓之極偶 / polarity for ellipse
Author:
XIE Yuheng
GeoGebra
New Resources
找出對稱軸
兩組對邊相等的四邊形
【案例】2013年安徽高考15题
拼砌四邊形
【案例】2018年全国1卷理科12题
Discover Resources
固定面積的圖形的周界變化
multiplication of complex number in unit circle
Center_Circle_Solution
中位线的副本
三角形
Discover Topics
Trapezoid
Constructions
Vectors 2D (Two-Dimensional)
Reflection
Logarithmic Functions