2017高三·全国·专题练习
1 . 如图,在平面直角坐标系中,反比例函数
(
)的图象与边长是6的正方形
的两边
,
分别相交于
,
两点,
的面积为10.若动点
在
轴上,则
的最小值是( )
![](https://img.xkw.com/dksih/QBM/2018/4/16/1925358351671296/1930322234515456/STEM/8230d229a0504ffb961d4ab79ff6478b.png?resizew=142)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2bb1548ddc0e5536a35b1bd78c4e7cd.png)
![](https://img.xkw.com/dksih/QBM/2018/4/16/1925358351671296/1930322234515456/STEM/8230d229a0504ffb961d4ab79ff6478b.png?resizew=142)
A.![]() | B.10 | C.![]() | D.![]() |
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2017高三·全国·专题练习
2 . 如图,在
中,
相交于点
,点
是
的中点,连接
并延长交
于点
,已知
,则下列结论:
①
,②
,③
,④
∽
,其中正确的是( )
![](https://img.xkw.com/dksih/QBM/2018/4/16/1925357956227072/1929155435331584/STEM/c828a5fd68a6487785324a40a87197bd.png?resizew=163)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3c032441543354c154ee67d744abb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6dde4fb1f1b33623fced9fb6ef2b0a1.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d137ad180d729cf3aa2057528510b48d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c863c286e0678bb637e1fe3e5604a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3fa0e0638cb58bb74ed75165b5bce6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4877b02291158ccb46b6d55da23259d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f8f01137e92c0f2e63467036ae9cce.png)
![](https://img.xkw.com/dksih/QBM/2018/4/16/1925357956227072/1929155435331584/STEM/c828a5fd68a6487785324a40a87197bd.png?resizew=163)
A.①②③④ | B.①④ | C.②③④ | D.①②③ |
您最近一年使用:0次
2017高三·全国·专题练习
3 . 如图,在矩形ABCD中,E是AD边的中点,BE⊥AC,垂足为F,连结DF,下列四个结论:①△AEF∽△CAB;②tan∠CAD=
;③DF=DC;④CF=2AF,正确的是( )
![](https://img.xkw.com/dksih/QBM/2018/4/16/1925357956227072/1929155435200512/STEM/9f0b7b33ecb64d6595bf4b710fde9769.png?resizew=171)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/2018/4/16/1925357956227072/1929155435200512/STEM/9f0b7b33ecb64d6595bf4b710fde9769.png?resizew=171)
A.①②③ | B.②③④ | C.①③④ | D.①②④ |
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2017高三·全国·专题练习
4 . (2017湖北随州)如图,在矩形ABCD中,AB<BC,E为CD边的中点,将△ADE绕点E顺时针旋转180°,点D的对应点为C,点A的对应点为F,过点E作ME⊥AF交BC于点M,连接AM、BD交于点N,现有下列结论:
①AM=AD+MC;②AM=DE+BM;③DE2=AD•CM;④点N为△ABM的外心.其中正确的个数为( )
![](https://img.xkw.com/dksih/QBM/2018/4/16/1925357956227072/1929155435159552/STEM/3362b1a3c73247d8ac78171f49a94aa8.png?resizew=243)
①AM=AD+MC;②AM=DE+BM;③DE2=AD•CM;④点N为△ABM的外心.其中正确的个数为( )
![](https://img.xkw.com/dksih/QBM/2018/4/16/1925357956227072/1929155435159552/STEM/3362b1a3c73247d8ac78171f49a94aa8.png?resizew=243)
A.1个 | B.2个 | C.3个 | D.4个 |
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2017高三·全国·专题练习
5 . 如图,菱形ABCD的边长为2,∠A=60°,一个以点B为顶点的60°角绕点B旋转,这个角的两边分别与线段AD的延长线及CD的延长线交于点P、Q,设DP=x,DQ=y,则能大致反映y与x的函数关系的图象是( )
![](https://img.xkw.com/dksih/QBM/2018/4/16/1925357673521152/1929139633266688/STEM/64e9f8a7f959488da92dbb54bf0caf5c.png?resizew=235)
![](https://img.xkw.com/dksih/QBM/2018/4/16/1925357673521152/1929139633266688/STEM/64e9f8a7f959488da92dbb54bf0caf5c.png?resizew=235)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
6 . 如图,已知⊙O的直径AB与弦AC的夹角为35°,过C点的切线PC与AB的延长线交于点P,那么∠P等于( )
![](https://img.xkw.com/dksih/QBM/2017/8/14/1758848850362368/1816566449266688/STEM/304ffc3c6e624c8fa4f26438214df6eb.png?resizew=107)
![](https://img.xkw.com/dksih/QBM/2017/8/14/1758848850362368/1816566449266688/STEM/304ffc3c6e624c8fa4f26438214df6eb.png?resizew=107)
A.15° | B.20° |
C.25° | D.30° |
您最近一年使用:0次
7 . 如图,PA是⊙O的切线,A为切点,PC是⊙O的割线,且PB=
BC,则
等于( )
![](https://img.xkw.com/dksih/QBM/2017/8/14/1758848850362368/1816566449258496/STEM/7c9a74053fb14ddbbf745b63add9ce9a.png?resizew=111)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ccc2f02416db8211128e18af2d13ecf.png)
![](https://img.xkw.com/dksih/QBM/2017/8/14/1758848850362368/1816566449258496/STEM/7c9a74053fb14ddbbf745b63add9ce9a.png?resizew=111)
A.2 | B.![]() | C.![]() | D.1 |
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8 . 如图,四边形ABCD内接于⊙O,BC是直径,AD=DC,∠ADB=20°,则∠ACB,∠DBC分别为( )
![](https://img.xkw.com/dksih/QBM/2017/8/14/1758848847544320/1815766069723136/STEM/9f4b37835f4a4ae3a5cc7c51b5cb93e6.png?resizew=95)
![](https://img.xkw.com/dksih/QBM/2017/8/14/1758848847544320/1815766069723136/STEM/9f4b37835f4a4ae3a5cc7c51b5cb93e6.png?resizew=95)
A.15°与30° | B.20°与35° |
C.20°与40° | D.30°与35° |
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9 . 如图,已知在△ABC中,AD∶DC=1∶2,E为BD的中点,AE延长线交BC于F,则BF∶FC等于( )
![](https://img.xkw.com/dksih/QBM/2017/8/14/1758848847544320/1815766069714944/STEM/ecf808cfacfc48878ebba8bea49a8e0a.png?resizew=105)
![](https://img.xkw.com/dksih/QBM/2017/8/14/1758848847544320/1815766069714944/STEM/ecf808cfacfc48878ebba8bea49a8e0a.png?resizew=105)
A.1∶5 | B.1∶4 |
C.1∶3 | D.1∶2 |
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10 . D、E、F是△ABC的三边中点,设△DEF的面积为4,△ABC的周长为9,则△DEF的周长与△ABC的面积分别是( )
A. ![]() | B.9,4 |
C. ![]() | D. ![]() |
您最近一年使用:0次