综合与实践
问题情境:
如图1,正方形
中,对角线
、
相交于点O,M是线段
上一点,连接
.
操作探究:
将
沿射线
平移得到
,使点M的对应点
落在对角线
上,
与
边交于点E,连接
.
的中点时,求证:
;
(2)如图3,当M是
上任意一点时,试猜想
的形状,并说明理由.
拓展延伸:
(3)在(2)的条件下,请直接 写出
,
之间的数量关系.
问题情境:
如图1,正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
操作探究:
将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a11cb104b04c4e6a1be700e81da279a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7451831b8fe6ed51a1bc356db265188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da895d8bd043625a0839128252130d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc94f790993ac8360286fedb13b50778.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b744ea719afe14fe6a3b4d6efb28e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b18a9d07629d44d64014e012cb3c1f2c.png)
(2)如图3,当M是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d9ac0aed483dfa78e3589b0b5839e25.png)
拓展延伸:
(3)在(2)的条件下,请
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5724ed0e46c8a9e9843082e734494e1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
更新时间:2024-05-06 11:11:06
|
相似题推荐
解答题-问答题
|
适中
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名校
【推荐1】如图,在
中,
,
,
,点
为
的中点,点
在线段
上以每秒2个单位的速度由点
向点
运动,同时点
在线段
上以每秒
个单位的速度由点
向点
运动,设运动时间为
(秒
.
(1)用含t的代数式表示线段
的长;
(2)若点P,Q的运动速度不相等,当
与
全等时,求a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4354365ca0929f8a606ed0bf341e4ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fee46768fe3cbde83875ce29fba2e98.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/7/4b7903ab-710d-4eb6-9bbb-bb218535a16e.png?resizew=120)
(1)用含t的代数式表示线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
(2)若点P,Q的运动速度不相等,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/983add910c8e09954f164a5e87d1f7fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acb4853c9f383c2f9956ba6d672c1c45.png)
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解答题-作图题
|
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名校
【推荐2】如图,在由6个大小相同的小正方形组成的方格中,设每个小正方形的边长均为1.
(1)如图①,
,
,
是三个格点(即小正方形的顶点),判断
与
的位置关系,并说明理由;
![](https://img.xkw.com/dksih/QBM/2019/10/30/2323031115186176/2323354379313152/STEM/b4149026e9f3467893ca2e8297388a22.png?resizew=133)
(2)如图②,连接三格和两格的对角线,求
的度数(要求:画出示意图,并写出证明过程).
(1)如图①,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2019/10/30/2323031115186176/2323354379313152/STEM/b4149026e9f3467893ca2e8297388a22.png?resizew=133)
(2)如图②,连接三格和两格的对角线,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85e0a69b5e255e3eb1c499a76725873e.png)
![](https://img.xkw.com/dksih/QBM/2019/10/30/2323031115186176/2323354379313152/STEM/b858b6b463654c2fad02325dc78dbdcb.png?resizew=131)
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解答题-证明题
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适中
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名校
【推荐1】如图,在
中,
,E、F分别是
的中点,延长
至点D,使
,连接
交
于点O.
(1)证明:
与
互相平分;
(2)若
,
,求
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5817a44033087407b1c18845c17f9a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc5b4d555101809e974ffda42bccd84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa9dfc3efd1b0660dae8df3f7bd14d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/27/615dc840-faa2-4f67-94db-370d26695234.png?resizew=144)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ce84f6062f12bf6ef42d7b733cd2248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐2】如图,在
中,点
分别为
的中点,过点
作
交
延长线于
,连接
,若
,则
的长为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed86911acfc988cd24508976ca8afc94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b47a08a25693bbfa01026573625ad15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3285d30976aec1a3beb139792a9764d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
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解答题-证明题
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适中
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【推荐1】某数学兴趣小组在课外活动中,研究三角形和正方形的性质时,做了如下探究:在
中,
,点D为直线
上一动点(点D不与B,C重合),以
为边在
右侧作正方形
,连接
.
(1)观察如图1,当点D在线段
上时,
①
与
的位置关系为:___________;
②
之间的数量关系为:___________;
请将结论直接写在横线上,并给予证明.
(2)数学思考
如图2,当点D在线段
的延长线上时,(1)中的①,②结论是否仍然成立?若成立,请给予证明;若不成立,请你写出正确结论再给于证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48985944f18cdab932799a93fe895345.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/2/816d1eab-0bab-49d7-af4b-8c7b3753ef03.png?resizew=524)
(1)观察如图1,当点D在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/631ae5e03f24b991a9226d0f04a25bd1.png)
请将结论直接写在横线上,并给予证明.
(2)数学思考
如图2,当点D在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
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解答题-证明题
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名校
【推荐2】如图1,E是正方形
边
上一点,过点C作
,交
的延长线于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/23/a6c73afb-5ec5-48c1-81f1-61434cfbdcb2.png?resizew=424)
(1)求证:
;
(2)如图2,若正方形边长为6,线段
上有一动点M从点D出发,以1个单位长度每秒沿
向A运动.同时线段
上另一动点N从点B出发,以2个单位长度每秒沿
向A运动,当点N到达点A后点M也停止运动.连接
,点N的运动时间为t,
的面积为S,求S关于t的函数关系式;
(3)如图3,连接
,连接
交
于点M,连接
并延长,交
于点P,已知
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbfc332950d19764830174dba000b9bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/23/a6c73afb-5ec5-48c1-81f1-61434cfbdcb2.png?resizew=424)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5259d8d5118634045dc7545508cb8e56.png)
(2)如图2,若正方形边长为6,线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12225a1a1eda07908309f8100cc34726.png)
(3)如图3,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f03dab955d3953261e1f3f437f6128f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
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解答题-问答题
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【推荐1】如图,将
(
为直角)沿着点
到点
的方向平移4个单位长度到
的位置,
与
交于点
.
,
,求
的长;
(2)若
,
,求阴影部分的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0b52aa203b1c3b59de8ad6c7d0ed93e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e691e76614be733eee2f2845b298847.png)
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解答题-作图题
|
适中
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【推荐2】如图,三角形ABC的顶点A,B,C都在格点(正方形网格线的交点)上,将三角形ABC向左平移2格,再向上平移3格,得到三角形
(设点A、B、C分别平移到
、
、
)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/6/4ef0a749-a872-4669-9d1c-486c9acfef74.png?resizew=300)
(1)请在图中画出平移后的三角形
;
(2)若连接
、
,则这两条线段的关系是______;
(3)直接写出△ ABC 的面积______;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a1264a2e3609e1c274acb89b5ea5019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/6/4ef0a749-a872-4669-9d1c-486c9acfef74.png?resizew=300)
(1)请在图中画出平移后的三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a1264a2e3609e1c274acb89b5ea5019.png)
(2)若连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655cc150ddc9deba2254780984d0024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ecac2dad4cffdd971fd23deacff3fc.png)
(3)直接写出△ ABC 的面积______;
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