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包絡線：橢圓
Author:
羅驥韡 (Pegasus Roe)
Topic:
Ellipse
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
三位數除以一位數（二）
兩位數除以一位數（二）
【案例】2013年安徽高考15题
錐體建築師
Discover Resources
二項分布與抽樣
Relationships between chords and their distances from centre
ie 4
星星
test
Discover Topics
Equilateral Triangles
Quadratic Equations
Boxplot
Similar Triangles
Curve Sketching