1 . 如图,在
中,D,E分别是边
的中点,F是
延长线上一点,且
,若
,
(
),则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17487118ab7a90fc8c91bf0870f3289e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10787ce380382dfd1cf02255a623d80b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0c26071fa1ebab92b8e750fd50d828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f675b94508e3f0345a9862e33684844.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eae51f0310b87cde2e206643e9d25a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae248960d8c1677cf948f8251275e863.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 如图,在
中,
,
,
,
是
的角平分线,
是斜边
的中点,过点
作
于
,交
于点
,连接
,则线段![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b644e2bc1df31ac474d646b1d1319400.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ebb33adb2310a6e03918761e68204a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47c9bff988abfbb5445c477e3f4a07ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b644e2bc1df31ac474d646b1d1319400.png)
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3 . 如图,在
中,
,
、
、
分别是三边的中点,
,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30bc8b797990b3230c10d78ddc746188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-07-03更新
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85次组卷
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3卷引用:安徽省黄山市2022—2023学年八年级下学期期末数学试题
安徽省黄山市2022—2023学年八年级下学期期末数学试题河南省洛阳市老城区2022-2023学年八年级下学期期末数学试题(已下线)专题07 矩形10种常考题型归类【好题汇编】-备战2023-2024学年八年级数学下学期期末真题分类汇编(安徽专用)
11-12八年级下·安徽黄山·期末
4 . 如图,E、F分别为
的边
、
的中点,延长
到D,使得
,连接
、
、
.
是平行四边形;
(2)若
,试说明四边形
是矩形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46ce838f38419e8781d63b3417cac5e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b0b077bfd3700e78db35bea761ae29.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b0b077bfd3700e78db35bea761ae29.png)
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2023-06-30更新
|
117次组卷
|
14卷引用:2012届安徽省黄山市八年级下学期期末模拟考试数学卷
(已下线)2012届安徽省黄山市八年级下学期期末模拟考试数学卷2013-2014学年江西省高安市八年级下学期期末考试数学试卷【全国区级联考】云南省昭通市昭阳区2018届九年级中考模拟试卷数学试题【区级联考】山东省德州市经济开发区2017——2018学年度第二学期期末考试八年级数学试题山东省德州市齐河县2018-2019学年八年级下学期期末数学试题云南省曲靖市陆良县2019-2020学年八年级下学期期末数学试题云南省玉溪市澄江市2018-2019学年八年级下学期期中数学试题山东省德州市陵城区2017-2018学年八年级下学期期末数学试题宁夏回族自治区吴忠市红寺堡区2020-2021学年八年级下学期期末数学试题吉林省长春市长春净月高新技术产业开发区2021-2022学年八年级下学期期末数学试题湖北省黄冈市浠水县兰溪镇兰溪初级中学2022-2023学年八年级下学期6月期末数学试题甘肃省平凉市华亭市皇甫学校2022-2023学年八年级下学期第二次月考数学试题(已下线)2023年山西省中考数学真题变式题19-21题(已下线)专题12矩形的判定(六大题型)-【好题汇编】备战2023-2024学年八年级数学下学期期中真题分类汇编(人教版,湖北专用)
5 . 如图,四边形
中, E是
边的中点, E、C两点恰好关于对角线
所在的直线对称,
,连接
.
![](https://img.xkw.com/dksih/QBM/2023/4/19/3219985650761728/3220473753436160/STEM/de318e1d08bf4a8a8867759169b21fc0.png?resizew=131)
(1)求证:四边形
是菱形;
(2)连接
交
于点F,若
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67b686b84b7a2b8e2326dbb88af5e855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/2023/4/19/3219985650761728/3220473753436160/STEM/de318e1d08bf4a8a8867759169b21fc0.png?resizew=131)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dafb1a0ad813ac32b1d3f9c408f623d.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ee826937d2add7a93aaa1422f8b736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
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6 . 如图,△ABC的周长为19,点D,E在边BC上,∠ABC的平分线垂直于AE,垂足为N,∠ACB的平分线垂直于AD,垂足为M,若BC=7,求MN的长度.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/7/fbf46a09-a258-4ca9-a524-f9ada1271b2b.png?resizew=247)
您最近一年使用:0次
2022-03-28更新
|
246次组卷
|
3卷引用:安徽省黄山市黟县2020-2021学年八年级下学期期末数学试题
安徽省黄山市黟县2020-2021学年八年级下学期期末数学试题(已下线)第15课 三角形的中位线-2022-2023学年八年级数学下册《考点·题型·技巧》精讲与精练高分突破系列(浙教版)江苏省苏州市昆山秀峰中学2023-2024学年八年级下学期3月数学试题
7 . 如图1,在△ABC中,AB=AC,∠BAC=α,点D、E分别在边AB、AC上,AD=AE,连接DC,点F、P、G分别为DE、DC、BC的中点.
(1)观察猜想:图1中,线段PF与PG的数量关系是 ,∠FPG= (用含α的代数式表示)
(2)探究证明:当△ADE绕点A旋转到如图2所示的位置时,小新猜想(1)中的结论仍然成立,请你证明小新的猜想.
(1)观察猜想:图1中,线段PF与PG的数量关系是 ,∠FPG= (用含α的代数式表示)
(2)探究证明:当△ADE绕点A旋转到如图2所示的位置时,小新猜想(1)中的结论仍然成立,请你证明小新的猜想.
![](https://img.xkw.com/dksih/QBM/2021/12/17/2874502520193024/2877308762980352/STEM/9a8b84d3-d53f-46ad-b259-410795e4aa37.png?resizew=237)
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2021-12-21更新
|
120次组卷
|
2卷引用:安徽省黄山市休宁县2021-2022学年九年级上学期第二次月考数学试题
8 . 如图,在平行四边形
中,
为
的中点,
为
上点,
交
于点
,
,
,
,则
的长为_________ cm.
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7206a4a9d662cb6cabcb1b24b978e13e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d15cb5ab931032f377cd5e17b1f3803.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dba66a5a76493a36eb5bc640d0bdf3a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/2021/5/20/2725202855026688/2726598501548032/STEM/fab4a77c-7665-4c04-aea4-330d47246404.png)
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9 . 如图,矩形ABCD中,AB:AD=2:1,E为AB的中点,F为EC上一动点,P为DF中点,连接PB,当PB的最小值为3
时,AD的值为( )
![](https://img.xkw.com/dksih/QBM/2021/3/12/2676292865343488/2677260081053696/STEM/9f613740-8847-433c-b369-a7186c63c517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/2021/3/12/2676292865343488/2677260081053696/STEM/9f613740-8847-433c-b369-a7186c63c517.png)
A.2 | B.3 | C.4 | D.6 |
您最近一年使用:0次
2021-03-13更新
|
1002次组卷
|
5卷引用:2022年安徽省黄山市初中学业水平模拟考试数学试题
2022年安徽省黄山市初中学业水平模拟考试数学试题2021年内蒙古自治区呼和浩特市中考数学模拟试题2021年浙江省温州市五校联考九年级中考模拟数学试卷(已下线)专题18.56 平行四边形动点问题(培优篇)(专项练习)-2022-2023学年八年级数学下册基础知识专项讲练(人教版)(已下线)专题5.31 平行四边形动点问题(培优篇)(专项练习)-2022-2023学年八年级数学下册基础知识专项讲练(浙教版)
10 . 如图,已知
中,
,
,直角
的顶点
是
中点,两边
.
分别交
.
于点
.
,给出下列四个结论:①
;②
是等腰直角三角形;③
;④四边形
的面积随着点
.
的位置不同发生变化,当
在
内绕顶点
旋转时(点
不与
.
重合),上述结论中始终正确的有________ (把你认为正确的结论的序号都填上).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa70e7c9ef8b856b494d370b7d76482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ce1475f537b4ad21775bfaa16daa0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca20cad859d2c4180086e82b08f39646.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf733ac3b5bc538868b9e499021508c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29560c08663a8e61d56c8ba3ef5633d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa70e7c9ef8b856b494d370b7d76482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/2020/11/22/2598453134680064/2599346547433472/STEM/08d57263-3c3f-486a-9736-c7da59ef2080.png)
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