如图,在
中,
分别垂直平分
和
,交
于M、N两点,
与
相交于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/ef8a90c2-f697-4c4a-b79a-18faf49fbc08.png?resizew=301)
(1)若
的周长为
,求
的长;
(2)若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579c40cc83f7281d9b1c417bf314dd83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c4c865445dda4a59b6d5cb18fd74404.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/ef8a90c2-f697-4c4a-b79a-18faf49fbc08.png?resizew=301)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12225a1a1eda07908309f8100cc34726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc31bf4b6ed8cf336432a5a2791e67e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2965dcbc436b5e4fc20cd4a894c6b89a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f8eff113ca3f0d0200253c7c2f5a7a.png)
更新时间:2024-03-27 17:56:46
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在四边形
中,
,
是
上一点,
是
延长线上一点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/25/0cf98b0c-d899-47f5-8155-8853ef4cd0b3.png?resizew=168)
(1)求
的度数;
(2)求证:
;
(3)若
在
上且
,试猜想
之间的数量关系,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e805933142fe94834303f89c0a7c909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86d1125b47dec1c5e93143ee59ad862a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/25/0cf98b0c-d899-47f5-8155-8853ef4cd0b3.png?resizew=168)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c543c3ddc3723fde6bbfca3ea3b921b.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac679f877d3e3b3acef1f1f8e3654b4b.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/570d94b654dd2e9c291b01ed3b59e973.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f01bf213ea68ca3ad1528d6d230687ad.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】P为
内一点,连接
在
和
中,如果存在两个三角形相似,那么称P是
的内相似点.
(1)如图①,在
中,
,P是
的内相似点.直接写出
的度数.
【深入思考】
(2)如图②,P是
内一点,连接
,从下面①②③中选择一个作为条件,使P是
的内相似点,并给出证明.
①
;②
;③
.
【拓展延伸】
(3)如图③,在
中,
.求作一点P,使P是
的内相似点.要求:①尺规作图;②保留作图痕迹,写出必要的文字说明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6744d07619cbb07dcfd4e7f185091b3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252e4c8d082ae4065907c4c8e48547d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fbfcae2cecc98e2d6c16dde6d3ec1c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(1)如图①,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729603ba178e07c41b169b8d9776b300.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0433f8116768b42642a7f7e5977ce6.png)
【深入思考】
(2)如图②,P是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7477f71a95969552ec0e7ddcd6dd6ad3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354c26d6ab9b0adc771b4b66720f2a2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d3e9158663137348ded8571a97f29e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7736aea128474f1eb9af431cfec07e6d.png)
【拓展延伸】
(3)如图③,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab8b45a64fd8b3fcb542ff4c3ddb4fdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,OF是
的平分线,点A在射线
上,P,Q是直线ON上的两动点,点Q在点P的右侧,且
,作线段OQ的垂直平分线,分别交直线OF,ON于点B,点C,连接AB,PB.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/8/73946020-2288-49a5-b37f-3713050a262b.png?resizew=302)
(1)如图1,请指出AB与PB的数量关系,并说明理由.
(2)如图2,当P,Q两点都在射线ON的反向延长线上时,线段AB,PB是否还存在(1)中的数量关系?若存在,请写出证明过程;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27935c1ef4df2d52ac697678a3c8f39d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0619ebb2dd6612a69c4686471bfeb0fb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/8/73946020-2288-49a5-b37f-3713050a262b.png?resizew=302)
(1)如图1,请指出AB与PB的数量关系,并说明理由.
(2)如图2,当P,Q两点都在射线ON的反向延长线上时,线段AB,PB是否还存在(1)中的数量关系?若存在,请写出证明过程;若不存在,请说明理由.
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】如图,在
中,
,
,
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/8/5f03bb48-01eb-4b84-abe6-7bde4bc436ab.png?resizew=218)
(1)用尺规作出
的垂直平分线交
于点
,交
于点
;
(2)若
,求
的长度
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fffa3d9c32da53b0ea0c338012ea20c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/8/5f03bb48-01eb-4b84-abe6-7bde4bc436ab.png?resizew=218)
(1)用尺规作出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/a0ed1ec316bc54c37c4286c208f55667.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6402c0f9eecfcdf73f9e87ca82a6f2c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
您最近一年使用:0次
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适中
(0.65)
名校
【推荐2】如图,△ABC中,AB=AC,∠BAC=120°,AD⊥AC交BC于点D,求证:CD=2AD.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/6/3e652a6f-1db0-43c9-8b25-b2b3741a2467.png?resizew=183)
您最近一年使用:0次