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[洋葱] 比例线段(02:50)
Author:
acchu
GeoGebra
New Resources
異分母分數減法
畫出對稱圖形
兩位數除以一位數（一）
錐體建築師
兩組對邊相等和有直角的四邊形
Discover Resources
等腰三角形 － 等角對等邊
等量公理
技巧集
x^3=log_a|x|
线段-视觉差
Discover Topics
Quadratic Functions
Translation
Diagrams
Means
Sequences and Series