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旋轉一物件
Author:
shihfeng
GeoGebra
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兩位數除以一位數（二）
兩位數加法
異分母分數減法
第八周作业
柱體建築師
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圓的展開partI
角平分線分點比例
二次函數中參數對圖形的影響
數學傳播39卷4期, 平面幾何公式思考
congruent (SS)
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Isosceles Triangles
Parabola
Coordinates
Fractal Geometry
Cuboid