如图所示的木制活动衣帽架是由三个全等的菱形构成,根据实际需要

如图所示的木制活动衣帽架是由三个全等的菱形构成,根据实际需要可以调节间的距离,若间的距离调节到60,菱形的边长,则的度数是(  

A                      B                     C                     D

答案

C

【解析】

如图(见解析),先根据菱形的性质可得,再根据全等的性质可得,然后根据等边三角形的判定与性质可得,最后根据平行线的性质即可得.

【详解】

如图,连接AC

四边形ABCD是菱形

如图所示的木制活动衣帽架是由三个全等的菱形构成,

是等边三角形

故选:C

【点睛】

本题考查了菱形的性质、等边三角形的判定与性质、平行线的性质等知识点,理解题意,熟练掌握菱形的性质是解题关键.

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