【问题背景】(1)如图
,
,
,
.求证:
;
【变式迁移】(2)如图
,
为正方形
外一点,
,过点
作
,垂足为
,连接
.求
的值;
【拓展创新】(3)如图
,
是
内一点,
,
,
,
,
,直接写出
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f45ec6cfa31ceea170942fea9e648e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b34233772c4c26d6669499d9b1f15a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c5f8d65aca2eef04b274a57f77fc275.png)
【变式迁移】(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e6414089941feb5d8a4a6a49566b9ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9677deecea626aa6e4078f0b532ba68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c06aa28f4e4ee00cdf3c8e7847225ed.png)
【拓展创新】(3)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d96a5d40d0aea9f4398ca4d0fe9b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc39144b305c67d44410d41053a1d28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/720c3b263dc80fa71df59fcaa37ecc1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/486bb5563a26c456d22c22758f3ad8a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/019a351c8982e78e7c69503880e2f7a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
2023·湖北十堰·二模 查看更多[2]
更新时间:2024-03-10 22:52:40
|
相似题推荐
【推荐1】如图,在平面直角坐标系中,点
,点
分别在
轴,
轴的正半轴上,且满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/30/7e05384f-7530-4607-949e-da240005ce07.png?resizew=199)
(1)求点
,点
的坐标.
(2)若点P从C点出发,以每秒1个单位的速度沿线段CB由C向B运动,连接AP,设
的面积为
,点P的运动时间为
秒,求
与
的函数关系式,并写出自变量的取值范围.
(3)在(2)的条件下,是否存在点
,使以点
为顶点的三角形与
相似?若存在,请直接写出点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/515f483538f44cbd838daa49fff26758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6f48b9a53c0155a692509cf31f7e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00988ec7b60ef8300467b373cf898dba.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/30/7e05384f-7530-4607-949e-da240005ce07.png?resizew=199)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若点P从C点出发,以每秒1个单位的速度沿线段CB由C向B运动,连接AP,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)在(2)的条件下,是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06517e171c67e03e12bc871d1b338151.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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【推荐2】综合与实践课上,老师让同学们以“正方形的折叠”为主题开展数学活动.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/fcb0767f-9e8a-41b1-bae9-08818b1adb47.png?resizew=325)
(1)迁移探究:
①如图1,当点M在
上时,
___________°,
___________°.
②改变点P在
上的位置(点P不与点A,D重合),如图2,判断
与
的数量关系,并说明理由.
③已知正方形纸片
的边长为8,当
时,直接写出
的长.
(2)拓展应用:
正方形
的边长为8,点P在边
上,将
沿直线
翻折,使得点A落在正方形内的点M处,连接
并延长交正方形
一边于点G.当
时,则
的长为___________.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/fcb0767f-9e8a-41b1-bae9-08818b1adb47.png?resizew=325)
(1)迁移探究:
①如图1,当点M在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5521d0070aa23dc0fe22956cc35ee3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/393df23fdf498b987f6338fedf0bc0cc.png)
②改变点P在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95cd4848ce65d25d3bb30a725322ca8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33149bfd164e70c6743fa0c97e9a897f.png)
③已知正方形纸片
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc5c276923c1a46eaf18193604fdb6b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
(2)拓展应用:
正方形
![](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/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd178e1add4b485f64fbe7fd3eecf4c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
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【推荐1】四边形
是正方形,E是直线
上一点,连接
,在
右侧,过点E作射线
,F为
上一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/7/d60f382b-3c43-4170-851a-ed043a5363d2.png?resizew=590)
(1)如图1,若点E是
边的中点,且
,连接
,则
________
;
(2)如图2,若点E是
边上一点(不与B,C重合),
,判断线段
与
的数量关系,并说明理由;
(3)若正方形边长为1,且
,当
取最小值时,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61cd874dd600932056e3ebf8f79612dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f541f7ae7c39082d202efd28805c54e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/7/d60f382b-3c43-4170-851a-ed043a5363d2.png?resizew=590)
(1)如图1,若点E是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03b70c662d45c1b741ea5ed7a31007cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d5231c160d4575c7339e08e209b8d5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)如图2,若点E是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0ffe426a9436a756f34f09f9e6ee5c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
(3)若正方形边长为1,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03b70c662d45c1b741ea5ed7a31007cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b8dffd659bc657c01cb8cf07591d805.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6830ebecddbd9759be626289c408e4f3.png)
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【推荐2】如图1所示,在正方形ABCD和正方形CGEF中,点B、C、G在同一条直线上,M是线段AE的中点,DM的延长线交EF于点N,连接FM,易证:DM=FM,DM⊥FM(无需写证明过程)
(1)如图2,当点B、C、F在同一条直线上,DM的延长线交EG于点N,其余条件不变,试探究线段DM与FM有怎样的关系?请写出猜想,并给予证明;
(2)如图3,当点E、B、C在同一条直线上,DM的延长线交CE的延长线于点N,其余条件不变,探究线段DM与FM有怎样的关系?请直接写出猜想.
(1)如图2,当点B、C、F在同一条直线上,DM的延长线交EG于点N,其余条件不变,试探究线段DM与FM有怎样的关系?请写出猜想,并给予证明;
(2)如图3,当点E、B、C在同一条直线上,DM的延长线交CE的延长线于点N,其余条件不变,探究线段DM与FM有怎样的关系?请直接写出猜想.
![](https://img.xkw.com/dksih/QBM/2016/9/28/1574244444020736/1574244450459648/STEM/5da68846-aef0-43f3-9144-8cb0cc2914f2.png?resizew=473)
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【推荐1】综合与实践
综合与实践课上,老师让同学们以“矩形的折叠”为主题开展数学活动,
(1)操作判断
操作一:对折矩形纸片
,使
与
重合,得到折痕
,把纸片展平;
操作二:在
上选一点P,沿
折叠,使点A落在矩形内部点M处,把纸片展平,连接
.
根据以上操作,如图1,当点M在
上时,写出下图中一个
的角:______.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/17/de12e4eb-ba26-463a-8370-d0e95bd1fef9.png?resizew=504)
(2)迁移探究
小华将矩形纸片换成正方形纸片
,且边长为
,继续探究,过程如下:
将正方形纸片
按照(1)中的方式操作,并延长
交
于点Q,连接
.
①如图2,当点M在
上时,求
的长:
②当点M不在
上,经过点M的直线
,交
于G,交
于H,当点P恰好为边
的中点时,
的长为______
;当点P恰好为边
的三等分点时(靠近点A),
的长为______
.
综合与实践课上,老师让同学们以“矩形的折叠”为主题开展数学活动,
(1)操作判断
操作一:对折矩形纸片
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
操作二:在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c61f652b991c925b72bdd1b5ef91836e.png)
根据以上操作,如图1,当点M在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/17/de12e4eb-ba26-463a-8370-d0e95bd1fef9.png?resizew=504)
(2)迁移探究
小华将矩形纸片换成正方形纸片
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb26c5cdef6f16f4b39cd091041b439.png)
将正方形纸片
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
①如图2,当点M在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632917e61f4208959686d118c7f19231.png)
②当点M不在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e44169ca257d7e7eed3954f45a1efced.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
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【推荐2】如图,正方形OABC的顶点O是坐标原点,边OA和OC分别在x轴、y轴上,点B的坐标为(4,4).直线l经过点C.
(1)若直线l与边OA交于点M,过点A作直线l的垂线,垂足为D,交y轴于点E.
①如图1,当OE=1时,求直线l对应的函数表达式;
②如图2,连接OD,求证:OD平分∠CDE.
(2)如图3,若直线l与边AB交于点P,且S△BCP=
S四边形AOCP,此时,在x轴上是否存在点Q,使△CPQ是以CP为直角边的直角三角形?若存在,求点Q的坐标,若不存在,请说明理由.
(1)若直线l与边OA交于点M,过点A作直线l的垂线,垂足为D,交y轴于点E.
①如图1,当OE=1时,求直线l对应的函数表达式;
②如图2,连接OD,求证:OD平分∠CDE.
(2)如图3,若直线l与边AB交于点P,且S△BCP=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/28/dce77861-72e5-4fb1-856c-bdaf69e60811.png?resizew=671)
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【推荐1】如图,抛物线
经过点A(-2,0),B(10,0),C(6,8).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/18/4245660f-54c5-45a6-b710-d33659cce55d.png?resizew=187)
(1)求抛物线的解析式;
(2)若点M是抛物线对称轴上的一点,且满足∠MCB=45°,求点M的坐标;
(3)现有一块足够大的三角板,将直角顶点Q放在直线AC上,一直角边始终经过点B,另一直角边与y轴交于点P.问:是否存在这样的点Q,使过P、Q、B三点的三角形与△POB全等,且两个三角形位于PB的异恻?若存在,求出AQ的长;若不存在,请说明理由?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/18/4245660f-54c5-45a6-b710-d33659cce55d.png?resizew=187)
(1)求抛物线的解析式;
(2)若点M是抛物线对称轴上的一点,且满足∠MCB=45°,求点M的坐标;
(3)现有一块足够大的三角板,将直角顶点Q放在直线AC上,一直角边始终经过点B,另一直角边与y轴交于点P.问:是否存在这样的点Q,使过P、Q、B三点的三角形与△POB全等,且两个三角形位于PB的异恻?若存在,求出AQ的长;若不存在,请说明理由?
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解答题-证明题
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【推荐2】如图1,在
ABCD中,AE⊥BC于E,E恰为BC的中点,tanB=2.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/2/4f0c3bbb-21ab-4ffe-a07f-10b4cd8d10df.png?resizew=322)
(1)求证:AD=AE;
(2)如图2,点P在BE上,作EF⊥DP于点F,连结AF,求证:DF-EF=
AF;
(3)请你在图3中画图探究:当P为射线EC上任意一点(P不与点E重合)时,作EF⊥DP于点F,连结AF,线段DF、EF与AF之间有怎样的数量关系?直接写出你的结论为____________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a5328919a7cec382c2e91c9c528fc1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/2/4f0c3bbb-21ab-4ffe-a07f-10b4cd8d10df.png?resizew=322)
(1)求证:AD=AE;
(2)如图2,点P在BE上,作EF⊥DP于点F,连结AF,求证:DF-EF=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
(3)请你在图3中画图探究:当P为射线EC上任意一点(P不与点E重合)时,作EF⊥DP于点F,连结AF,线段DF、EF与AF之间有怎样的数量关系?直接写出你的结论为____________.
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