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包絡線：拋物線
Author:
羅驥韡 (Pegasus Roe)
Topic:
Parabola
GeoGebra
New Resources
拼砌四邊形
柱體建築師
三位數除以一位數（二）
兩組對邊相等和有直角的四邊形
找出對稱軸
Discover Resources
Bearings 方位
二次函數圖形與兩軸的交點
Lituus
兩圓及交弦
Locus (Non parallel lines)
Discover Topics
Rhombus
Tangent Function
Cosine
Coordinates
Calculus