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威畢特點
Author:
連琨銘
GeoGebra
New Resources
直角坐標平面上的旋轉變換
異分母分數減法
找出對稱軸
兩組對邊相等的四邊形
四邉形 (四年級) 教師版
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方格紙
volume of tetrahedron and parallelepiped
同心圓和線段-3(線段到最外圓有小圓)
基础知识
正方形纸片剪出正三角形（顶点在边上）
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Translation
Derivative
Sequences and Series
Addition
Trigonometric Functions