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Author:
Cathyyu920311
GeoGebra
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GeoGebra笔记功能体验课件
四邉形 (四年級) 教師版
拼砌四邊形
直角坐標平面上的旋轉變換
兩位數除以一位數（一）
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Trajectory of system: y'=y^2-y
這是什麼角(一)
Internal tangent
錯角---垂直平行綫
四色地图
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Square
Arithmetic Mean
Fractal Geometry
Right Triangles
Geometric Mean