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zhe shi ping xing si bian xing ma
Author(s): 
Pages: 31-32+111
Year: Issue:  Z2
Journal: School Journal of Mathematics

Keyword:  平行四边形相等对边对角线老师同学图形课堂习题发现;
Abstract: <正>课堂上,老师让同学们探讨一道习题:一组对边相等,一组对角相等的四边形是平行四边形吗?为什么?小马虎画了几个图形,发现"一组对边相等,一组对角相等的四边形是平行四边形"。
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