1 . 如图,在
中,
,
,线段
的垂直平分线
交
于点F,交
于点E,交
的延长线于点D,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ec5d678ec42846e1d28301e3bfd4be.png)
______ .
![](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://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.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/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070bc896d35495237fd65576e9b6f88e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ec5d678ec42846e1d28301e3bfd4be.png)
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10-11八年级上·安徽铜陵·期中
名校
2 . 近年来,国家实施“村村通”工程和农村医疗卫生改革,某县计划在张村、李村之间建一座定点医疗站P,张、李两村座落在两相交公路内(如图所示). 医疗站必须满足下列条件:(1)使其到两公路距离相等,(2)到张、李两村的距离也相等,请你通过作图确定P点的位置.(不写作法,要保留作图痕迹)
您最近一年使用:0次
2024-03-01更新
|
51次组卷
|
45卷引用:专题1.1 三角形的证明 重难点题型13个-2022-2023学年八年级数学下册重难题型全归纳及技巧提升专项精练(北师大版)
(已下线)专题1.1 三角形的证明 重难点题型13个-2022-2023学年八年级数学下册重难题型全归纳及技巧提升专项精练(北师大版)陕西省西安市2022—2023学年八年级下学期第一阶段学评检测数学试卷甘肃省定西市岷县2023-2024学年八年级上学期期中数学试题陕西省咸阳市永寿县御家宫中学等校联考2022-2023学年八年级下学期第一次月考数学试题云南省曲靖市罗平县腊山第二中学2023-2024学年八年级上学期期中数学试题(已下线)2010年安徽省铜陵县初二上学期期中六校联考数学卷(已下线)2011年安徽省庆市江津区初二上学期期末考试七校联考数学卷(已下线)2011-2012年江苏省丰县中学八年级上学期期中考试数学卷2015-2016学年江苏省靖城中学共同体八年级上学期期中考试数学试卷2015-2016学年山东省临沂市八年级上学期阶段性抽测数学试卷江苏省东台市第一教育联盟2016-2017学年八年级上学期第一次月考数学试题江苏省无锡市光华中学2017-2018学年上学期第一次月考八年级数学试卷湖北省恩施州利川市长坪民族初级中学2017-2018学年八年级上学期期中考试数学试题河北省秦皇岛市卢龙县2017-2018学年八年级上学期期中考试数学试题江苏省洪泽县黄集中学2017-2018学年八年级上学期第三次月考数学试题河北省秦皇岛市卢龙县2017-2018学年八年级(上)期中数学试卷黑龙江省鸡西市虎林市八五八农场学校2017-2018学年八年级(上)期中数学试卷(已下线)期中检测卷- 2018-2019学年八年级上学期数学教材(人教版)云南省泸西县逸圃初级中学2018-2019学年八年级上学期期中考试数学试题黑龙江省伊春市铁力四中2018-2019学年八年级(上)第一次月考数学试题【校级联考】山东省临沂市郯城县2018-2019学年八年级上学期期中考试数学试题【校级联考】辽宁省抚顺市新宾县2018-2019学年八年级上学期期中考试数学试题福建省厦门市音乐学校2018-2019学年八年级第一学期期中考试数学试题江苏省镇江市丹徒区2018-2019学年八年级上学期10月月考数学试题广东省东莞市横沥爱华学校2019-2020学年八年级上学期期中数学试题江苏省淮安市三树镇蒋集学校2019-2020学年八年级上学期10月月考数学试题山东省德州市陵城区江山实验学校2019-2020学年八年级上学期期中数学试题山东省德州市武城县育才实验学校2019-2020学年八年级上学期期中数学试题山东省德州市宁津县育新中学2019-2020学年八年级上学期期中数学试题河北省衡水市武邑县2019-2020学年八年级上学期12月月考数学试题河南省开封市金明中学2019-2020学年八年级上学期期中数学试题甘肃省永昌县第五中学2020—2021学年八年级上学期期中数学试题广东省湛江市雷州市第八中学2020-2021学年八年级上学期期中数学试题四川省阆中中学、保宁中学2020-2021学年八年级上学期期中数学试题江西省寻乌县博豪中学2020-2021学年八年级上学期期中数学试题山东省德州市宁津县育新中学2020-2021学年八年级上学期期中数学试题广东省江门市第二中学2020-2021学年八年级上学期期中数学试题四川省自贡市贡井区成佳中学校2019-2020学年八年级上学期第二次月考数学试题宁夏回族自治区固原市五原中学2020-2021学年八年级上学期9月月考数学试题甘肃省平凉市庄浪县2021-2022学年八年级上学期期中数学试题云南省弥勒市长君实验中学2021-2022学年八年级上学期期中考试数学试题陕西省安康市白河县2023-2024学年八年级上学期期末数学试题陕西省渭南市白水县2023-2024学年八年级上学期期末数学试题河南省郑州市二七区2023-2024学年八年级下学期数学期中复习题(二)陕西省榆林市高新区2023-2024学年八年级下学期期中数学试题
3 . 如图,菱形
的对角线
、
相交于点O,过点D作
于点H,若
,则菱形
的面积是( )
![](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/41a7cf70f8772d8fea4599b18df2c88f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f7d3eb7e40b3525fd35543be2324b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
A.![]() | B.1 | C.![]() | D.4 |
您最近一年使用:0次
名校
4 . 如图,四边形
是平行四边形,点E是边
上一点,且
,
交
于点F,P是
延长线上一点,下列结论:①
平分
;②
平分
;③
;④
.其中正确的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8915b7d1abc441d76c7485628219d71f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80125e48498ac9c548732e2af1b1758d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d59511c474942171fb685fc3f8dfd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3702b5620dbee356a8e560c78d223ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01009f2f3a3476fd1efe90291083132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c763a92479feee14e11ad3ed7a914462.png)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
2024-02-15更新
|
535次组卷
|
6卷引用:2024年湖南省永州市道县绍基学校中考模拟数学试题
2024年湖南省永州市道县绍基学校中考模拟数学试题山东省青岛市黄岛区2020-2021学年八年级下学期期末数学试题山东省东营市河口区2023-2024学年八年级上学期期末数学试题山东省聊城市东昌府区2023-2024学年八年级下学期第一次月考数学试题(已下线)第01讲 平行四边形的性质(3个知识点+7类热点题型讲练+习题巩固)-【帮课堂】2023-2024学年八年级数学下册同步学与练(人教版)山东省济南市育英中学2023-2024学年八年级下学期期中考试数学试题
5 . 如图,
中,
,点
、
分别从点
、点
同时出发,沿三角形的边顺时针运动,点
的速度为
,点
的速度为
,当点
,点
第一次相遇时,点
,点
同时停止运动,设点
,点
的运动时间为
(
)秒.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/28/74669cca-3749-4ccf-b3b3-162d1bbcc727.png?resizew=432)
(1)当点
在
上时,
______;当点
在
上时,
______(用含
的代数式表示).
(2)点
在
上时,若
为直角三角形,求
的值.
(3)连结
,当线段
的垂直平分线经
的某一顶点时,直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1369c6f1b9683278afe8c3f4148a9495.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f09251dec02dc2419a5389cca8f136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851e3bfbfb0fe4100165ec20803b5cf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fff6e7e2b9f2b68b1647f6350b98dc8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/28/74669cca-3749-4ccf-b3b3-162d1bbcc727.png?resizew=432)
(1)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dd3b6b7e9aadb1189cb2a277a2f68f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42a1b84c7ee3e7036c6e49fe272aeb2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)连结
![](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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
6 . 如图,在
中,
,
,作直线
,使得
.过点B作
于D,在
的延长线上取点E,使
. 连接
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/209ed56c-aaf3-4cb9-8eee-32c4500be945.png?resizew=155)
(1)依题意补全图形;
(2)若
,求
(用含
的式子表示);
(3)用等式表示线段
之间的数量关系,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2bfe1ffc118f44c7c1249171443ee82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55e1de129bfc451f4c7160cc50666ad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f94cb32b388456ab9203e8d8b5309e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/209ed56c-aaf3-4cb9-8eee-32c4500be945.png?resizew=155)
(1)依题意补全图形;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c499d3ef329f85e59fd72dec6f453bbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d29e7c4d6216690152430b09f9cf0c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(3)用等式表示线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be90e61d78055b1bf20b118fdeca6a99.png)
您最近一年使用:0次
2024-01-19更新
|
269次组卷
|
2卷引用:北京市海淀区2023-2024学年八年级上学期期末数学试题
7 . 在矩形
中,
.
折叠,使点A落在点F处(如图①),设
与
相交于点G,求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/478d8cdad9506e889570ca6618a49615.png)
;
(2)将矩形沿直线
折叠,使点B的对应点
落在
边上(如图②),点A的对应点为
,连接
交
于点
.当
时,求
、
的长;
(3)点M在线段
上,点N在线段
上,(如图③)若按
折叠后,点
落在矩形
的
边上
点,请求
的最大值和最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92f1844834ef0315a704d8e2fba77544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/478d8cdad9506e889570ca6618a49615.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
(2)将矩形沿直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655cc150ddc9deba2254780984d0024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72a2b5d1e93a9567319d3d537333ce48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
(3)点M在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](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/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
您最近一年使用:0次
名校
8 . 已知:如图,在矩形
中,
,点E为边
的中点,连接
,
交
于点F.点P从点B出发,沿
方向匀速运动,速度为2cm/s;同时,点Q从点A出发,沿
方问匀速运动,速度为3cm/s,当一个点停止运动时,另一个点也停止运动.设运动时间为
.解答下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/3f4e7d02-bf61-4ed6-be98-d789f3b100b7.png?resizew=131)
(1)当t为何值时,点P在线段
的垂直平分线上?
(2)连接
,设五边形
的面积为
,求y与t的函数关系式;
(3)在运动过程中,是否存在某一时刻
,使点Q在
的平分线上?若存在,求出t的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a560d6e956cb4c1c3ce8dff25801ecf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc3a3137299ffaea0545cd45323f1af2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c12d00820facec9c71c3d800384e3ccd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/3f4e7d02-bf61-4ed6-be98-d789f3b100b7.png?resizew=131)
(1)当t为何值时,点P在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de9991f750e3aba09ca840cdb9a09b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/012b14b48c09eb820c49c13dccb642bb.png)
(3)在运动过程中,是否存在某一时刻
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13a2e6494cf8d2dff0746a9bb72cef43.png)
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2024-01-17更新
|
232次组卷
|
2卷引用:2023年山东省青岛二十六中学中考数学一模模拟试题
名校
9 . 如图,
中,
,
,
.点P是射线
上一点(不与点B重合),
为
的垂直平分线,交
于点F,交射线
于点E,连接
.
(1)求
的度数;
(2)当点P在线段BC上时,设
,
的面积为y,求y关于x的函数解析式,并写出函数的定义域;
(3)如果
,请直接写出
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1f4f255d191786f7d330d278868c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83cb6327dcbc8a998e6586bcfa7a3b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d743aa51d044c6c9426dfe75e0c0023a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/16/cd1edcee-669e-4946-a304-c677044aa485.png?resizew=159)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
(2)当点P在线段BC上时,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96bc55510792f8bd30e1c0686609fe3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729684f958ad60b8e905fe1e1da53c03.png)
(3)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc85ee32ba9e6407546cf1561d8610e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
您最近一年使用:0次
名校
10 . 如图(1),四边形
中,
,
平分
.
(1)求证:
.
(2)如图(2)
的垂直平分线交
于
,交
于
,过
作
,交
延长线于
.求证:
.
(3)如图(3),在(2)的条件下,连接
,若
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3798a74058ec4bc40b6d9b5d268c359b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/15/1e90d355-73bb-4405-9dd5-279a76e4fb5e.png?resizew=512)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
(2)如图(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090c757c225b6961975c9610e3dbae56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17b22554cb4eedb4d7e53c830a5c3639.png)
(3)如图(3),在(2)的条件下,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a8b0d2c7b6617ae2e87169732730b3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04725e51b4870658f74de79403e3898f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
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