Question

【題目】一個(gè)正方形最多可以畫（ ）條對(duì)稱軸．

A．1 B．4 C．2

Answer 1

【答案】B

【解析】

試題分析：根據(jù)對(duì)稱軸的定義，對(duì)稱圖形中對(duì)折能使圖形兩部分重合的線就是對(duì)稱軸；正方形的特點(diǎn)是對(duì)角相等，對(duì)邊相等，4個(gè)角都是直角，所以沿對(duì)邊對(duì)折，有2條對(duì)稱軸，沿對(duì)角對(duì)折有2條對(duì)稱軸，共4條對(duì)稱軸；據(jù)此選擇．

解：正方形沿對(duì)邊對(duì)折，有2條對(duì)稱軸，沿對(duì)角對(duì)折有2條對(duì)稱軸，共4條對(duì)稱軸；

故選：B．