如图，DE⊥AB，垂足为D，EF∥AC，∠A=30°，

（1）求∠DEF的度数；

（2）连接BE，若BE同时平分∠ABC和∠DEF，问EF与BF垂直吗？为什么？

A

Welcome to Happy Winter Camp

    The 2017 Happy Winter Camp is between 8:30 a.m. and 11:00 a.m.  from  February 1^st to February 8^th. All kids aged 12 to 16 are welcome. Each kid can join in only one of these activities and needs to pay￥200 for it.

⒈Music clubs (singing, piano, violin, guitar, etc)

⒉Art clubs (drawing, painting, photo-editing, etc)

⒊Sports clubs (baseball, basketball, soccer, volleyball, skiing, etc)

⒋Language Center (English, Japanese, French, etc)

   If you really want to have an interesting winter holiday, please join us. You can come to our hotel to book your seat. Also you can phone or email us.

Add: Hongxing Hotel, No. 528, Zhongshan Street, Hangzhou Tel: 0571-83033698

E-mail: camping2017@sina.com