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包絡線：橢圓
Author:
羅驥韡 (Pegasus Roe)
Topic:
Ellipse
GeoGebra
New Resources
三位數除以一位數（一）
找出對稱軸
拼砌四邊形
【案例】2013年安徽高考15题
画直线等分三角形的面积
Discover Resources
convolution_demo1
QP3.18
複合圖形(七)
gyzel 橢圓的反射
面積
Discover Topics
Intersection
Straight Lines
Constructions
Geometric Distribution
Sine