Question

（2002•岳陽(yáng)）正方形、菱形、矩形都具有的性質(zhì)是（　�。�

A．對(duì)角線相等

B．對(duì)角線互相平分

C．對(duì)角線互相垂直

D．對(duì)角線平分一組對(duì)角

Answer 1

分析：根據(jù)正方形、菱形、矩形對(duì)角線的性質(zhì)，分析求解即可求得答案．

解答：解：∵正方形的對(duì)角線互相平分，互相垂直，相等且平分一組對(duì)角，
菱形的對(duì)角線互相平分，互相垂直且平分一組對(duì)角，
矩形的對(duì)角線互相平分且相等，
∴正方形、菱形、矩形都具有的性質(zhì)是：對(duì)角線互相平分．
故選B．

點(diǎn)評(píng)：此題考查了正方形、菱形、矩形的性質(zhì)．此題比較簡(jiǎn)單，注意熟記正方形、菱形、矩形對(duì)角線的性質(zhì)是解此題的關(guān)鍵．