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練習 - 反射對稱
Author:
Lau Sir
GeoGebra
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異分母分數減法
直角坐標平面上的旋轉變換
兩組對邊相等的四邊形
兩位數除以一位數（二）
兩組對邊相等和有直角的四邊形
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會動的圖形
horizontal
Square
黃金三角形 62326 劉虹圻
折扣 例1的副本
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Area
Curve Sketching
Cylinder
Fractions
Ellipse