满分5 >
初中数学试题 >
如图,延长正方形ABCD的边AB到E,使BE=AC,则∠E= 度.
如图,延长正方形ABCD的边AB到E,使BE=AC,则∠E=
度.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000142994107741/SYS201311030001429941077012_ST/images0.png)
考点分析:
相关试题推荐
如图菱形ABCD的一条对角线的中点O到AB的距离为2,那么O点到另一边的距离为
.
查看答案
如图,过矩形ABCD对角线的交点O,且分别交AB、CD于E、F,那么阴影部分的面积是矩形ABCD的面积的
.
查看答案
小许拿了一张正方形的纸片如图甲,沿虚线对折一次得图乙.再对折一次得图丙.然后用剪刀沿图丙中的虚线(虚线与底边平行)剪去一个角.打开后的形状是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000142994107741/SYS201311030001429941077009_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000142994107741/SYS201311030001429941077009_ST/images1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000142994107741/SYS201311030001429941077009_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000142994107741/SYS201311030001429941077009_ST/images3.png)
D.
查看答案
梯形ABCD中,AB∥CD,若AD=m,CD=n,AB=m+n,则下列等式一定成立的是( )
A.∠A=∠B
B.∠D=2∠B
C.BC=m-n
D.BC=m+n
查看答案
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000142994107741/SYS201311030001429941077007_ST/images0.png)
如图,菱形纸片ABCD的一内角为60°,边长为2,将它绕O点顺时针旋转90°后到A′B′C′D′位置,则旋转前后两菱形重叠部分多边形的周长是( )
A.8
B.4(
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000142994107741/SYS201311030001429941077007_ST/0.png)
-1)
C.8(
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000142994107741/SYS201311030001429941077007_ST/1.png)
-1)
D.4(
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000142994107741/SYS201311030001429941077007_ST/2.png)
+1)
查看答案