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折扣 例1
Author:
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
找出對稱軸
直角坐標平面上的旋轉變換
四邉形 (四年級) 教師版
兩位數除以一位數（一）
判斷球體
Discover Resources
waaachen
圖四
Demo
一次函數平移(進階)
題五
Discover Topics
Statistical Characteristics
Rotation
Angles
Straight Lines
Equations