如图,在
中,E,F是边
上的两个三等分点,D是
的中点,
分别交
,
于点P,Q,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ff575e55857af133edb24c8e61504f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9021b6d50c8452a6fea0af78cd33b482.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/7/81839513-bde3-4c1c-a13f-cb0cdee2d5e3.png?resizew=130)
2023九年级·全国·专题练习 查看更多[1]
(已下线)专题22 相似三角形-备战2023年中考数学一轮复习之必考点题型全归纳与分层精练(全国通用)
更新时间:2023-03-01 12:20:42
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相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】D、E分别是不等边三角形
(即
)的边
、
的中点.O是
所在平面上的动点,连接
、
,点G、F分别是
、
的中点,顺次连接点D、G、F、E.
的内部时,求证:四边形
是平行四边形;
(2)若四边形
是菱形,则
与
应满足怎样的数量关系?(直接写出答案,不需要说明理由.)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787ac5e13622afab5e9f8603afe42356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b1789f2135b9bfc56aab3f5d00ba67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d62e8aadaadebf1454fde21a390ebdea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6967ebd791092c62b4ef97924d91883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d62e8aadaadebf1454fde21a390ebdea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6967ebd791092c62b4ef97924d91883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61d1c53840b6405b2004a41272ae2700.png)
(2)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61d1c53840b6405b2004a41272ae2700.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7a3e520a16d4fdd73c4e6a4ce7be0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
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解答题-证明题
|
适中
(0.65)
名校
【推荐2】如图,在矩形
中,E是
上一点,
垂直平分
,分别交
于点P、Q,垂足为O,已知F为
的中点,
,且
面积是6.
(1)求证:四边形
是菱形;
(2)求
的长;
(3)求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e430f13f42cf2d44aa0f0e20b959684f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7958bf505cec48ef1f5412c9ac76b769.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377f5c10cf527c87ab06bff61384f7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1c93b74607641bb1840c814c44a14fa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/1/e261db80-7153-45f6-b18d-44adde779833.png?resizew=217)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/656036fe678d9fe1e444efe306ae1487.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d62e8aadaadebf1454fde21a390ebdea.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e430f13f42cf2d44aa0f0e20b959684f.png)
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解答题-问答题
|
适中
(0.65)
【推荐1】如图,在△ABC中∠B的平分线为BD,DE
AB交BC于点E,若AB=9,BC=6,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a9ff6eb7bd66027e58cab2e3b1a9632.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/4/a1cedc58-53fe-4aad-b1df-406daf2ae971.png?resizew=179)
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解答题-证明题
|
适中
(0.65)
【推荐2】如图,在等边
中,点D在线段
上,将线段
绕点D顺时针旋转
,得到线段
,连接
,线段
的中点为F,连接
、
.
(1)请在图1中探究:当______时,点E恰好在边
上,并补完此时的图形;
(2)当点E在
内部时,试探究线段
与
之间的数量关系并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c0927afc571a7c966c98192040979e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/29/eb4a6992-b2df-4c40-b639-04e54f6fdf4e.png?resizew=228)
(1)请在图1中探究:当______时,点E恰好在边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)当点E在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
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