如图,B、C、E三点在同一条直线上,AC∥DE,AC=CE,∠ACD=∠B.   

如图,B、C、E三点在同一条直线上,AC∥DE,AC=CE,∠ACD=∠B.
    (1)求证:△ABC≌△CDE;
(2)若∠A=40°求∠BCD的度数.

答案



解析:

相关题目

孟子早年提出“生于忧患,死于安乐”的思想。温家宝总理
孟子早年提出“生于忧患,死于安乐”的思想。温家宝总理在某地视察时也强调各级领导干部要有忧患意识。这说明,中国传统思想 A.是中华民族之魂
一圆筒形汽缸静置于地面上,如图8-2-12所示.汽缸的质量为M,
一圆筒形汽缸静置于地面上,如图8-2-12所示.汽缸的质量为M,活塞(连同手柄)的质量为m,汽缸内的横截面积为S,大气压强为p0,平衡时汽缸的容积为V.
设函数则函数的零点的个数为             .
设函数则函数的零点的个数为             .
在图中画出合适的透镜.
在图中画出合适的透镜.
图12-2-9(a)表示一列简谐波在介质中传播时,某一质点a的振
图12-2-9(a)表示一列简谐波在介质中传播时,某一质点a的振动图象,请你在(b)图中作出这列简谐波在t=0时刻的波形图(质点a画在坐标原点上). 图12
—How long have you known the doctor ? —         he helped me three
—How long have you known the doctor ? —         he helped me three years ago.A.When B.Before C.BecauseD.Since
   Some researchers, parents and teachers have suggested that high-school cla
   Some researchers, parents and teachers have suggested that high-school classes begin later in the morning to accommodate (适应) teens’ needs for more sleep.    31   However, in the m
能促进细胞的分裂和生长,使枝叶长得繁茂的无机盐是   A.
能促进细胞的分裂和生长,使枝叶长得繁茂的无机盐是   A.含氮的无机盐                      B.含磷的无机盐     C.含钾的无机盐  

最新题目