如图是由小正方形组成的
的网格,每个小正方形的顶点叫做格点,
的三个顶点都是格点,仅用无刻度的直尺在给定网格中完成画图,画图过程用虚线表示.
(1)图1中,在
上画点P,使
;在
上画点H,使
;
(2)图2中,在
上画点Q,连
,使
;
(3)图3中,点D是
内一个格点,如图所示,在
上画点M,使
值最小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15f59e7ba0ef456ddc71308dbc4a3e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/15/0fe6084a-5002-4775-813a-54077dcba7a2.png?resizew=612)
(1)图1中,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90c7363b19741ced55c95a1b090e410b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ab97d8cfc1766469c8d0449aaab2bd4.png)
(2)图2中,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0a7b6bf571bc7ed052e5f1430fb8f24.png)
(3)图3中,点D是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c8c210650b91825d919c5cc1cf0ae6.png)
2023·湖北武汉·一模 查看更多[2]
更新时间:2023-08-06 18:52:30
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图1所示,四边形
是半径为R的
的内接四边形,
是
的直径,连接
,
平分
交
于点F,直线l过点F与线段
的延长线交于点E.且满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/90d19797-8718-444f-9425-3be2a69c153c.png?resizew=354)
(1)求证:直线l是
的切线;
(2)如图2所示,若点D是弧
的中点.延长
交直线l于点G,且
;
①求证:
;②若
,
,求四边形
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d3f9b99890e5650853f830170dccea6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a33f381b03270154695d6b5421b1e739.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/90d19797-8718-444f-9425-3be2a69c153c.png?resizew=354)
(1)求证:直线l是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)如图2所示,若点D是弧
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2c58da85ea329bc614a6126a6a85113.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c321f2c60f10f38faacf6fb6f7adeef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c572083c2af625b8222e19a53a5d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60aff2703236ee0db7e73d511656a294.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,
内接于
.
为直径,过
作
,交
的延长线于点
,过
作
的切线交
于点
.
;
(2)若
的半径为4,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cee097d4fe948c3d4f1b5c28b24adf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b0175dc2b94c0825fc250da0a2ba648.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf461f23743af212618a987311a87a33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,点C在以AB为直径的⊙O上,BD平分∠ABC交⊙O于D,过D作⊙O的切线DE交BC于E.
(1)求证:DE⊥BC;
(2)若AB=5,BE=4,求AD的长.
(1)求证:DE⊥BC;
(2)若AB=5,BE=4,求AD的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/c399ee7d-dade-4801-965a-a1375a30da62.png?resizew=168)
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(0.65)
名校
【推荐2】如图,已知矩形ABCD的两条对角线相交于点O,过点A作AG⊥BD分别交BD、BC于点G、E.
(1)求证:BE2=EG•EA;
(2)连接CG,若BE=CE,求证:∠ECG=∠EAC.
(1)求证:BE2=EG•EA;
(2)连接CG,若BE=CE,求证:∠ECG=∠EAC.
![](https://img.xkw.com/dksih/QBM/2018/1/30/1871578944348160/1874267978924032/STEM/5d65a567cf96466aab886ea55c13adbe.png?resizew=155)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】某款“不倒翁”的主视图如图1,它由半圆O和等边
组成,直径
,半圆O的中点为点C,
为桌面,半圆O与
相切于点Q,拨动“不倒翁”后它在桌面
上做无滑动的滚动.
,请直接写出
的长为______
(结果保留根号);
(2)如图2,当
时,连接
,
.求点C到桌面
的距离(结果保留根号);
(3)当
或
垂直于
时“不倒翁”开始折返,直接写出从
滚动到
(图2—图3)过程中,点Q在
上移动的距离.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6747441b260ca043446b5d472fece440.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e52060a3cb5cde73c28264f4e08a3e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
(2)如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1158d242ab71cc73e8dd3d2ade930ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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解答题-证明题
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(0.65)
名校
【推荐2】如图,
为
的直径,点C在
上,
,直线
于点D,交AB的延长线于点F.
为
的切线;
(2)当
,
时,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/086c3f6c2e1d75b48c004b7f4954557e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dac702fe64edf1bc265da4b98cf2a0.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf79cfe0fdfb20eeac5c6f38e2dab8d.png)
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您最近一年使用:0次