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包絡線：橢圓
Author:
羅驥韡 (Pegasus Roe)
Topic:
Ellipse
GeoGebra
New Resources
AI 訓練教室
Nested spiral octagon
直角坐標平面上的旋轉變換
四邉形 (四年級) 教師版
Fibonacci Clock
Discover Resources
色塊移動川流不息
精神堡壘
Example 1
雙曲線的副本
元旦快乐（制作：孟宝兴）
Discover Topics
Definite Integral
Similar Triangles
Differential Equation
Sphere
Rotation