如图,已知A、E、F、C在一条直线上,AE=CF,过E、F分别作DE⊥AC,BF⊥A

如图,已知A、E、F、C在一条直线上,AE=CF,过E、F分别作DE⊥AC,BF⊥AC。且已知AB=CD。
【小题1】(1)试问DB平分EF能成立吗?请说明理由。
【小题2】(2)若△DEC的边EC沿AC方向移动,其余条件不变,如图,上述结论是否仍成立?请说明理由。

答案


【小题1】
【小题2】解析:

相关题目

右图是云室中某粒子穿过铅板前后的轨迹,室内匀强磁场的
右图是云室中某粒子穿过铅板前后的轨迹,室内匀强磁场的方向与轨迹所在平面垂直(图中垂直纸面向里),铅板上有标度,由此可知此粒子(    )A
 单项填空 Make a of the things you need to buy before shopping and that wi
 单项填空 Make a of the things you need to buy before shopping and that will save money as well as time.         A. number          B. list        C. photo     D. p
His poor _____ English prevented him _____. A. spoken; from understanding   
His poor _____ English prevented him _____. A. spoken; from understanding     B. spoken; from being understood C. speaking; from understanding   D. speaking; from being understood
美国“宪法之父”麦迪逊说,全国政府“应当在一切案件中
美国“宪法之父”麦迪逊说,全国政府“应当在一切案件中对各州的法律享有否决权,正如同英国国王在此之前所做的那样。我认为这是十分基本的一
She was a four-year-old girl with very fine golden hair when I first met her. Sh
She was a four-year-old girl with very fine golden hair when I first met her. She was carrying a bowl of soup. I was 29 at that time and   11   from the flu.    Her mom and I had been friends fo
已知集合P={1,2},那么满足QP的集合Q的个数是(    )A.4      
已知集合P={1,2},那么满足QP的集合Q的个数是(    )A.4                     B.3                    C.2                    D.1
下列加线字读音正确的一组是(      ) A.直言不讳(huì)
下列加线字读音正确的一组是(      ) A.直言不讳(huì) 鹤长凫短(fǔ) 汗流浃背(jiá)       无耻谰言(lán) B.万箭攒心(cuán)    万马齐
由地震形成的海洋中有大小相似的甲、乙两个小岛,某时间
由地震形成的海洋中有大小相似的甲、乙两个小岛,某时间段内岛上鸟类种类和数量随时间变化的情况如图所示,下列有关叙述中错误的是( ) A.两岛

最新题目