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七巧板
Author:
s1002978
GeoGebra
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【案例】2013年安徽高考15题
兩組對邊相等的四邊形
四邉形 (四年級) 教師版
拼砌四邊形
兩組對邊相等和有直角的四邊形
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優良作品3(昀潔)
直線排列 3
BkD_act15_04c
奠基
全等三角形
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Combinatorics
Median Value
Algebra
Probability
Coordinates