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橢圓之極偶 / polarity for ellipse
Author:
XIE Yuheng
GeoGebra
New Resources
找出對稱軸
畫出對稱圖形
拼砌四邊形
第八周作业
算柱 (兩位數)
Discover Resources
F5 rev exercise Q16b
直線方程式--斜率比較
弦心距垂直平分弦
多邊形陣列
sin(x) 的函數圖形的副本
Discover Topics
Orthocenter
Polynomial Functions
Variance
Kite
Linear Programming or Linear Optimization