满分5 >
初中数学试题 >
(2001•昆明)平面上A、B两点到直线l的距离分别是和,则线段AB的中点C到直...
(2001•昆明)平面上A、B两点到直线l的距离分别是
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232637990848658/SYS201310212326379908486003_ST/0.png)
和
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232637990848658/SYS201310212326379908486003_ST/1.png)
,则线段AB的中点C到直线l的距离是( )
A.3
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232637990848658/SYS201310212326379908486003_ST/2.png)
C.3或
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232637990848658/SYS201310212326379908486003_ST/3.png)
D.以上答案都不对
考点分析:
相关试题推荐
(2008•襄阳)顺次连接等腰梯形四边中点所得到的四边形是( )
A.等腰梯形
B.直角梯形
C.矩形
D.菱形
查看答案
(2009•钦州)如图,在等腰梯形ABCD中,AB=DC,AC,BD交于点O,则图中全等三角形共有( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232637990848658/SYS201310212326379908486001_ST/images0.png)
A.2对
B.3对
C.4对
D.5对
查看答案
(2001•呼和浩特)如图,图中的△BDC′是将矩形ABCD沿对角线BD折叠得到的,图中(包括实线,虚线在内)共有全等三角形( )对.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232637990848658/SYS201310212326379908486000_ST/images0.png)
A.1
B.2
C.3
D.4
查看答案
(2001•重庆)已知:如图,在矩形ABCD中,BC=2,AE⊥BD,垂足为E,∠BAE=30°,那么△ECD的面积是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232637990763269/SYS201310212326379907632029_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232637990763269/SYS201310212326379907632029_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232637990763269/SYS201310212326379907632029_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232637990763269/SYS201310212326379907632029_ST/2.png)
D.
查看答案
(2001•嘉兴)菱形的边长为4cm,一个内角为30°,这个菱形的面积为( )
A.2cm
2B.4cm
2C.6cm
2D.8cm
2
查看答案