下列命题中正确的是( )   A.对角线相等的四边形是矩形   B.对角

下列命题中正确的是(  )

  A.对角线相等的四边形是矩形

  B.对角线互相垂直的四边形是矩形

  C.对角线相等的平行四边形是矩形

  D.对角线互相垂直的平行四边形是矩形

答案

C 

相关题目

补出下列名句名篇的空缺部分。(任选两小题作答,4分) (
补出下列名句名篇的空缺部分。(任选两小题作答,4分) (1)上书谏寡人者,受中赏;,,受下赏。 (《战国策??邹忌讽齐王纳谏》) (2), ;不
以下有关水的说法错误的是(   )    A.自由水是良好溶
以下有关水的说法错误的是(   )    A.自由水是良好溶剂      B.水能维持生物体生命活动     C.衰老细胞水分减少      D.新陈代谢旺盛
Harry visited the bookstore every week. He became such a _______ customer that t
Harry visited the bookstore every week. He became such a _______ customer that the bookseller gave him some books as presents. A. common         B. normal             C. usual   
下列关于实验过程的叙述,正确的一组是(     ) A.解离
下列关于实验过程的叙述,正确的一组是(     ) A.解离的目的是用药液使组织细胞加快分裂速度 B.漂洗的目的是为了洗去根尖上的酸,避免与碱性
Yesterday, I met my old friend ________, which gave me a big surprise.    A. i
Yesterday, I met my old friend ________, which gave me a big surprise.    A. in return                   B. on purpose               C. by chance           
State schools are different from private schools, in terms of their funding and
State schools are different from private schools, in terms of their funding and administration. State schools receive most of their funds from the government while private schools rely on private s
设m是|a|、|b|和1中最大的一个,当|x|>m时,求证:|+|<2.
设m是|a|、|b|和1中最大的一个,当|x|>m时,求证:|+|<2.
森林中某哺乳动物种群的个体数量变动情况如图所示,下列
森林中某哺乳动物种群的个体数量变动情况如图所示,下列分析正确的是 A.该种群数量波动为非周期波动              B.该种群数量在a点时

最新题目