满分5 >
初中数学试题 >
已知:如图,无盖无底的正方体纸盒ABCD-EFGH,P,Q分别为棱FB,GC上的...
已知:如图,无盖无底的正方体纸盒ABCD-EFGH,P,Q分别为棱FB,GC上的点,且FP=2PB,GQ=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185729590295692/SYS201311011857295902956008_ST/0.png)
QC,若将这个正方体纸盒沿折线AP-PQ-QH裁剪并展开,得到的平面图形是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185729590295692/SYS201311011857295902956008_ST/images1.png)
A.一个六边形
B.一个平行四边形
C.两个直角三角形
D.一个直角三角形和一个直角梯形
考点分析:
相关试题推荐
如图,AB是⊙O的直径,弦BC=2cm,F是弦BC的中点,∠ABC=60°.若动点E以2cm/s的速度从A点出发沿着A→B→A方向运动,设运动时间为t(s)(0≤t<3),连接EF,当△BEF是直角三角形时,t(s)的值为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185729590295692/SYS201311011857295902956007_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185729590295692/SYS201311011857295902956007_ST/0.png)
B.1
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185729590295692/SYS201311011857295902956007_ST/1.png)
或1
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185729590295692/SYS201311011857295902956007_ST/2.png)
或1或
查看答案
在直角梯形ABCD中,AD∥BC,∠ABC=90°,AB=BC,E为AB边上一点,∠BCE=15°,且AE=AD.连接DE交对角线AC于H,连接BH.下列结论:
①△ACD≌△ACE;②△CDE为等边三角形;③
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185729590295692/SYS201311011857295902956006_ST/0.png)
=2;④
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185729590295692/SYS201311011857295902956006_ST/1.png)
.
其中结论正确的是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185729590295692/SYS201311011857295902956006_ST/images2.png)
A.只有①②
B.只有①②④
C.只有③④
D.①②③④
查看答案
某校用420元钱到商场去购买“84”消毒液,经过还价,每瓶便宜0.5元,结果比用原价多买了20瓶,求原价每瓶多少元?设原价每瓶x元,则可列出方程为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185729590295692/SYS201311011857295902956005_ST/0.png)
-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185729590295692/SYS201311011857295902956005_ST/1.png)
=20
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185729590295692/SYS201311011857295902956005_ST/2.png)
-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185729590295692/SYS201311011857295902956005_ST/3.png)
=20
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185729590295692/SYS201311011857295902956005_ST/4.png)
-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185729590295692/SYS201311011857295902956005_ST/5.png)
=0.5
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185729590295692/SYS201311011857295902956005_ST/6.png)
-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185729590295692/SYS201311011857295902956005_ST/7.png)
=0.5
查看答案
将直径为60cm的圆形铁皮,做成三个相同的圆锥容器的侧面(不浪费材料,不计接缝处的材料损耗),那么每个圆锥容器的底面半径为( )
A.10cm
B.30cm
C.45cm
D.300cm
查看答案
图1表示正六棱柱形状的高大建筑物,图2中的阴影部分表示该建筑物的俯视图,P、Q、M、N表示小明在地面上的活动区域.小明想同时看到该建筑物的三个侧面,他应在( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101185729590295692/SYS201311011857295902956003_ST/images0.png)
A.P区域
B.Q区域
C.M区域
D.N区域
查看答案