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包絡線：橢圓
Author:
羅驥韡 (Pegasus Roe)
Topic:
Ellipse
GeoGebra
New Resources
四邊形的特性
小数 的副本
兩組對邊相等和有直角的四邊形
球體建築師
算柱 (兩位數)
Discover Resources
總結
立體線圈
水波干涉
circle
錐體的橫截面
Discover Topics
Probability
Terms
Geometry
Integral Calculus
Intersection