如图,点
是矩形
的边
延长线上一点,连接
交
于点
,
.
,使
交线段
于点
,连接
;(保留作图痕迹,不写作法)
(2)在(1)的基础上,求证:
.
![](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/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/665f6fb409d3b29c9bd0459f8b9fb064.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d831c9ba6d18774540e2aaa29132fec9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d69f2006b1fcd949e557fd83f88a895.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
(2)在(1)的基础上,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bca927b232649d457422447fc71bc10.png)
更新时间:2024-04-12 09:23:30
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图是由边长为1的小正方形构成的网格,每个小正方形的顶点叫做格点.
的顶点在格点上,仅用无刻度尺的直尺在给定网格中画图,画图过程用虚线表示,画图结果用实线表示,按步骤完成下列问题:
(1)将边
绕点
顺时针旋转90°得到线段
;
(2)画边
的中点
;
(3)连接
并延长交
于点
,直接写出
的值;
(4)在
上画点
,连接
,使
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
(1)将边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)画边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f579c72ae028016cdebbee4220ab136.png)
(4)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b7c7aa7af2be894c493aa263e50068f.png)
![](https://img.xkw.com/dksih/QBM/2020/6/11/2482613478449152/2484720943587328/STEM/934d9631dd7441b48bf0bca09cff3445.png?resizew=274)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】已知:如图,线段
、
相交于点
,
,点
是线段
上一点.
(1)用直尺和圆规,以点
为顶点,
为一边,在线段
下方作
,使
,边
与
的延长线相交于点
.(要求:尺规作图,不写作法和结论,保留作图痕迹)
(2)在(1)的情况下,求证:
(请完成以下证明过程).
证明:
,
∴______
______,
∴
,
∵
,
∴______
______,
∴______
______,
∴
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/439fbb8974a5f907205d26b47b420bf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/27/bfb3fe40-bedd-4e75-9386-48cfdc65a09b.png?resizew=160)
(1)用直尺和圆规,以点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1642eec556eb252de9c1ab7bb5ca90b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4598486f8c5ac28b1165b76e78105979.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4264f96ff60f74e19b15379fd8df81ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)在(1)的情况下,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca84044d0e1de6c7540879ed3a55bb12.png)
证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b11a754d131b59e5d35f63cd1b90581c.png)
∴______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f718f2aa89c5bd9c54956f7875dbe977.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/439fbb8974a5f907205d26b47b420bf4.png)
∴______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
∴______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca84044d0e1de6c7540879ed3a55bb12.png)
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解答题-问答题
|
适中
(0.65)
名校
【推荐1】如图,已知
ABC中,AB=AC,AB的垂直平分线DE交AC于D,垂足为E.
(1)若AB=19,BC=16,求
BCD的周长;
(2)若∠A=36°,求∠DBC的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
(1)若AB=19,BC=16,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
(2)若∠A=36°,求∠DBC的度数.
![](https://img.xkw.com/dksih/QBM/2021/7/28/2773814329212928/2781859108003840/STEM/525f7fba39bc48c1930f9de9fd31949f.png?resizew=107)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】如图,已知
ABC中,AB=5cm,BC=7cm.
![](https://img.xkw.com/dksih/QBM/2022/1/11/2892271392899072/2944697070247936/STEM/9e69cea4-2a8c-4b3a-8172-038407254e1b.png?resizew=186)
(1)作图:作AC边的垂直平分线,分别交AC、BC边于点D、E(用尺规作图,保留作图痕迹,不要求写作法);
(2)在(1)的条件下,连接AE,求
ABE的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://img.xkw.com/dksih/QBM/2022/1/11/2892271392899072/2944697070247936/STEM/9e69cea4-2a8c-4b3a-8172-038407254e1b.png?resizew=186)
(1)作图:作AC边的垂直平分线,分别交AC、BC边于点D、E(用尺规作图,保留作图痕迹,不要求写作法);
(2)在(1)的条件下,连接AE,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.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,在矩形
中,点E在
上,且
,延长
至点F,使
,连接
,交
、
分别于M、N.
为菱形;
(2)若
且
,求
的长度.
![](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/3c2fc41701373d0e0b0395815ad07c61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a893fc8b2e9d55c9cdf8aceb3827a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/946c16d99496d31ce4d87301a4793393.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616cf58c0252574f598d909bad6a6801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e5c289b8aabdbfba95c7fd1e1842f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3533837e3d08c461dea031a44e5424d.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,在矩形
中,点
是
的中点,连接
,过点
作
的垂线分别交
,
于点
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/6/126f570f-6037-419d-82e3-8d9142404b5c.png?resizew=174)
(1)求证:
;
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/8455657dde27aabe6adb7b188e031c11.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/6/126f570f-6037-419d-82e3-8d9142404b5c.png?resizew=174)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59885214189cde104965a710566efa21.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d623a68e1575896ff7d6e4d428256037.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
名校
【推荐1】在平面直角坐标系
中,对于点A和线段
,如果点A,O,M,N按逆时针方向排列构成菱形
,且
,则称线段
是点A的“
相关线段”.例如,图1中线段
是点A的“
-相关线段”.
![](https://img.xkw.com/dksih/QBM/2021/4/30/2710805935177728/2711145919848448/STEM/3ad21737-e4dd-4209-b117-45f9b4c873c9.png?resizew=672)
(1)已知点A的坐标是
.
①在图2中画出点A的“
-相关线段”
,并直接写出点M和点N的坐标;
②若点A的“
-相关线段”经过点
,求
的值;
(2)若存在
使得点P的“
-相关线段”和“
-相关线段”都经过点
,记
,直接写出t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6e01068f79fe668989d793891867b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb4fddc8045e815ffa58cff4bed74d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4446f654cf8401b640cc79c2b97af5db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://img.xkw.com/dksih/QBM/2021/4/30/2710805935177728/2711145919848448/STEM/3ad21737-e4dd-4209-b117-45f9b4c873c9.png?resizew=672)
(1)已知点A的坐标是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b094cba781181aeb90752170e9ba6c94.png)
①在图2中画出点A的“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
②若点A的“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b92d2bbeed206ab7e8f3e237e0a8708e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/162e3e6ce11d9f16f3a1af7e4a6c668c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1156a8b29780810bd472f6d9e11b0e39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80a8033e3d72d793ca7bee30ad40f975.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
解题方法
【推荐2】在菱形
中,
为对角线
上一点,点
在直线
上,且
.如图①,当
时,点
在线段
的延长线上,线段
之间的数量关系是
(无需证明);
![](https://img.xkw.com/dksih/QBM/2020/4/29/2452025388949504/2453544311758848/STEM/c4472e0f-8849-4524-b301-808dae750e8d.png)
(1)如图②,当
,点
在线段
上时,线段
之间有怎样的数量关系?写出你的猜想,并给予证明;
![](https://img.xkw.com/dksih/QBM/2020/4/29/2452025388949504/2453544311758848/STEM/0cf81091-c513-432f-bb6a-b03aaa46c4bc.png)
(2)如图③,当
,点
在线段
的延长线上时,直接写出线段
之间又有怎样的数量关系?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cf33d73483c93f24cc6a1d76ef22ca6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a611d507bd9c88d91ea4de7ed0bc1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e918b70b02a73685e3c536c7f380e2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dda3c3b32974b87d9667d0886a49b751.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17e8f3c5991e8d787e5f7fd6cce965da.png)
![](https://img.xkw.com/dksih/QBM/2020/4/29/2452025388949504/2453544311758848/STEM/c4472e0f-8849-4524-b301-808dae750e8d.png)
(1)如图②,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dda3c3b32974b87d9667d0886a49b751.png)
![](https://img.xkw.com/dksih/QBM/2020/4/29/2452025388949504/2453544311758848/STEM/0cf81091-c513-432f-bb6a-b03aaa46c4bc.png)
(2)如图③,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dca8f6f404c915b9ca082a9059d2ee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dda3c3b32974b87d9667d0886a49b751.png)
![](https://img.xkw.com/dksih/QBM/2020/4/29/2452025388949504/2453544311758848/STEM/69650e70-f890-4794-bf9f-eda6c7e08f0d.png)
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