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Author:
范欣茹
GeoGebra
New Resources
拼砌四邊形
直角坐標平面上的旋轉變換
異分母分數減法
算柱 (兩位數)
三位數除以一位數（二）
Discover Resources
台灣加油台灣加油
电子表格建点
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Light reflected in ellipse
轴对称
Discover Topics
Perimeter
Algebra
Orthocenter
Equilateral Triangles
Logarithm