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旋轉正方形
Author:
22吳心妤
GeoGebra
New Resources
四邊形的特性
兩位數除以一位數（二）
畫出對稱圖形
画直线等分三角形的面积
四邉形 (四年級) 教師版
Discover Resources
Area of Triangle_2
Sine Formula 正弦公式
幾何鋪磚
分數小數
乘加挑戰題
Discover Topics
Special Points
Orthocenter
Statistics
Arithmetic Operations
Fractions