2017高三·全国·专题练习
1 . 如图,长方形ABCD中,AB=6,第一次平移长方形ABCD沿AB的方向向右平移5个单位长度,得到长方形A1B1C1D1,第2次平移长方形A1B1C1D1沿A1B1的方向向右平移5个单位长度,得到长方形A2B2C2D2,…,第n次平移长方形An-1Bn-1Cn-1Dn-1沿An-1Bn-1的方向向右平移5个单位长度,得到长方形AnBnCnDn(n>2),若ABn的长度为2 016,则n的值为__________ .
![](https://img.xkw.com/dksih/QBM/2018/4/16/1925358141726720/1929655888347136/STEM/6df4edd270714d188da93d00c2a8859b.png?resizew=270)
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2017高三·全国·专题练习
2 . 如图,正方形ABCD中,AB=2,E是CD中点,将正方形ABCD沿AM折叠,使点B的对应点F落在AE上,延长MF交CD于点N,则DN的长为______ .
![](https://img.xkw.com/dksih/QBM/2018/4/16/1925358141726720/1929655888363520/STEM/d04f16ef29954869afb3af977143d3f4.png?resizew=146)
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2017高三·全国·专题练习
3 . 如图,将矩形ABCD沿GH对折,点C落在Q处,点D落在E处,EQ与BC相交于F.若AD=8cm,AB=6cm,AE=4cm.则△EBF的周长是______ cm.
![](https://img.xkw.com/dksih/QBM/2018/4/16/1925358141726720/1929655888478208/STEM/216a387860f348d999dbc48f5beca5fb.png?resizew=147)
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2017高三·全国·专题练习
4 . 如图,已知AD∥BC,AB⊥BC,AB=3. 点E为射线BC上一个动点,连接AE,将△ABE沿AE折叠,点B落在点B′处,过点B′作AD的垂线,分别交AD,BC于点M,N. 当点B′为线段MN的三等分点时,BE的长为__________________ .
![](https://img.xkw.com/dksih/QBM/2018/4/16/1925358141726720/1929655888437248/STEM/fd1d61cfe1ce4f67b162944f06eff3c9.png?resizew=180)
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2017高三·全国·专题练习
5 . 如图,在
中,
,
,以点
为圆心,
的长为半径画弧,与
边交于点
,将
绕点
旋转
后点
与点
恰好重合,则图中阴影部分的面积为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa8cee7d2463f6f7d352e8b65f47cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed8f7d3d7043d4b1eb98fc5c4e2fcd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1f4f255d191786f7d330d278868c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd6ffb78dad3375efa3b08ab518553d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6179572d3d0a6191eca90f614e7cc4b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://img.xkw.com/dksih/QBM/2018/4/16/1925358141726720/1929655888420864/STEM/6983fd06bb7d4a6082f81f56ff637125.png?resizew=149)
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2017高三·全国·专题练习
6 . 如图,四边形
是平行四边形,
,
点C在x轴的负半轴上,将ABCO绕点A逆时针旋转得到平行四边形ADEF,AD经过点O,点F恰好落在x轴的正半轴上.若点D在反比例函数
的图像上,则k的值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/607543bb9f55b8a141ed2d6cf0e1a20b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9774f83067ed956a551bc41adcce0469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa915a60a2d6e535369715ba84015b4.png)
![](https://img.xkw.com/dksih/QBM/2018/4/16/1925358141726720/1929655888396288/STEM/026bf4b26a264394a36cbfbdd0542be4.png?resizew=211)
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2017高三·全国·专题练习
7 . 如图,在
中,
,
,
,点
,
分别是边
,
上的动点,沿
所在的直线折叠
,使点
的对应点
始终落在边
上,若
为直角三角形,则
的长为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeefb1d8dc44787a9b1dcef3b27ea766.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f14011bda351a53d94203e5509206527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://img.xkw.com/dksih/QBM/2018/4/16/1925358141726720/1929655888306176/STEM/3b25ddd605454cc4a54501a5c07f2eac.png?resizew=194)
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2017高三·全国·专题练习
8 . 如图,正方形纸片ABCD的边长为12,E,F分别是边AD,BC上的点,将正方形纸片沿EF折叠,使得点A落在CD边上的点A′处,此时点B落在点B′处.已知折痕EF=13,则AE的长等于_________ .
![](https://img.xkw.com/dksih/QBM/2018/4/16/1925358141726720/1929655888093184/STEM/8f86c28055dd4faf833e15716da04ef8.png?resizew=80)
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2017高三·全国·专题练习
9 . 如图,在等边△ABC中,AB=4,点P是BC边上的动点,点P关于直线AB,AC的对称点分别为M,N,则线段MN长的取值范围是__________ .
![](https://img.xkw.com/dksih/QBM/2018/4/16/1925358141726720/1929655888134144/STEM/43a5cb9dc0294788932d6d14026e3b50.png?resizew=132)
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