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Author:
孟宝兴
GeoGebra
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【案例】2013年安徽高考15题
兩組對邊相等和有直角的四邊形
找出對稱軸
異分母分數減法
四邉形 (四年級) 教師版
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Floor plan area
終點軌跡
愛心
求三棱锥体积
翰林數學_2下_CH3-2_SSA
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Difference and Slope
Mathematics
Optimization Problems
Linear Functions
Quadrilaterals