1 . 如图,
是等腰三角形,
,
.以点B为圆心,任意长为半径作弧,交
于点F,交
于点G,分别以点F和点G为圆心,大于
的长为半径作弧,两弧相交于点H,作射线
交
于点D;分别以点B和点D为圆心,大于
的长为半径作弧,两弧相交于M、N两点,作直线
交
于点E,连接
.下列结论不正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/26/38b1e59a-d288-429a-ab3d-2a76b04f2fc0.png?resizew=102)
![](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/ee54b9b398ce80cd054b56173fe810f0.png)
![](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/b0c12d1115fa9075c5807ef3a4c36f6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdae78f4d3b8d8213ac3ac9a9567eb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c81613520ab5a478f0b2616a9bcb79d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/26/38b1e59a-d288-429a-ab3d-2a76b04f2fc0.png?resizew=102)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2024-01-30更新
|
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3卷引用:湖北省十堰市2023-2024学年八年级上学期期末数学试题
2 . 如图,已知
中,
是
的垂直平分线,
的周长为
,则
的周长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/aa7b068e-51b4-44cb-8690-11de0ecd0a7c.png?resizew=161)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f3245f56431e921f88cab653839a82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/aa7b068e-51b4-44cb-8690-11de0ecd0a7c.png?resizew=161)
A.19 | B.16 | C.13 | D.11 |
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3 . 在
中,
,点
为边
的中点,点
在边
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/9/8f3e24a8-a164-469f-be15-a50629a13405.png?resizew=298)
(1)若
,
,
(如图①),求
的长;
(2)过点
作
与边
交于点
(如图②),试探究:线段
、
、
三者之间的数量关系,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/9/8f3e24a8-a164-469f-be15-a50629a13405.png?resizew=298)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62fec86a6fa67dacc92300c878ff03af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/848710a5bd7f8be60d6bc2f97a3cd555.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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
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4 . 如图,点
,
在平面直角坐标系中的坐标轴上,点
为
内一点,
.
的距离;
(2)如图1,射线
交
的垂直平分线于点C,试判断
的形状,并说明理由;
(3)如图2,
为x轴正半轴上一点,将
沿
所在直线翻折,与y轴,线段
分别交于点F,G,试探究
的周长是否会发生变化,若变化,求变化范围;若不变,求
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/586d6b7a54a256cb0ecd0ea2d8262f6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/549f5e607ed8f8812cd9d40b693074fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c76045dbd863a89519d1993903516fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)如图1,射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fbfcae2cecc98e2d6c16dde6d3ec1c1.png)
(3)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a702eadcc351f3c4c47dfae3edebcfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bd9311e5295f10061deb2872fe04af5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bd9311e5295f10061deb2872fe04af5.png)
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2024-01-29更新
|
100次组卷
|
2卷引用:湖北省武汉市汉阳区2023-2024学年八年级上学期期末数学试题
5 . 如图,
中,点D在
上,点E在
上,
为
的垂直平分线.若
,且
,则根据图中标示的角,下列判断正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/29/86793286-c8aa-4fc2-a80e-c1f3b2c9f80c.png?resizew=191)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4354365ca0929f8a606ed0bf341e4ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58c751cb9a7cfe395d2b4e691d66f501.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/29/86793286-c8aa-4fc2-a80e-c1f3b2c9f80c.png?resizew=191)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
名校
6 . 如图,在
中,
,
,
的面积为12,
于点D,直线
垂直平分
交
于点E,交
于点F,P是线段
上的一个动点,则
的周长的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acee03d4bb4667b6c345221b6c9b0fa4.png)
A.6 | B.7 | C.10 | D.12 |
您最近一年使用:0次
2024-01-29更新
|
325次组卷
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19卷引用:湖北省咸丰县民族中学2023-2024学年八年级上学期第三次月考数学试题
湖北省咸丰县民族中学2023-2024学年八年级上学期第三次月考数学试题湖北省十堰市2023-2024学年八年级上学期期末数学试题湖北省十堰市竹溪县城关初级中学2023-2024学年八年级上学期期末数学试题 湖北省十堰市张湾区、茅箭区、郧阳区等2023-2024学年八年级上学期期末数学试题河南省安阳市殷都区2020-2021学年八年级上学期期末数学试题云南省曲靖市麒麟区第七中学2021-2022学年八年级上学期期中数学试题(已下线)专题2.2 最值模型之将军饮马 专项讲练-2022-2023学年八年级数学上册重难题型全归纳及技巧提升专项精练(浙教版)(已下线)八年级数学下学期期中模拟卷 -【单元测试】2022-2023学年八年级数学下册分层训练AB卷(湘教版)(已下线)专题5.1 生活中的轴对称 重难点题型12个-2022-2023学年七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)广东省台山市育英中学2021-2022学年八年级上学期第二次月考数学试题天津市第五十五中学2023-2024学年九年级上学期期中数学试题四川省泸州市合江县2023-2024学年八年级上学期期中数学试题广东省惠州市大亚湾区博雅培文实验学校2023-2024学年八年级上学期月考 数学试题广西壮族自治区防城港市防城区2024年八年级上学期期末数学试题天津市河东区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(已下线)易错04 三角形1(八大易错分析 避坑大招 学以致用 易错题通关)-备战2024年中考数学考试易错题(全国通用)山东省德州市庆云县崔口镇初级中学2023-2024学年八年级下学期3月份单元检测数学试题湖南省怀化市洪江市实验中学2023-2024学年八年级下学期期中数学试题
7 . 如图,在
中,
.
(1)用尺规作图:作
的角平分线,交
于点D,作
的垂直平分线,交
于点P(保留痕迹,不写作法);
(2)连接
,
,试判断
,
,
间的数量关系,并说明理由;
(3)若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/9/5914465e-c083-4344-bb9c-a7442dd328b7.png?resizew=81)
(1)用尺规作图:作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.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/03902478df1a55bc99703210bccab910.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cec69d43f611d65d9b0dc642a83f12ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0433f8116768b42642a7f7e5977ce6.png)
您最近一年使用:0次
8 . 如图,在等边
的边长
,
、
分别为
、
的角平分线,
、
的垂直平分线交
于E、F,则
的长为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e2a96ad10f818c9a5ad7ef46a304c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12d8da10b2137a1e87801556a313e625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a3eb9576531c4ca1077be7cb5ef14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4da037fe7fa1dff1116c17df53a99f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a375501962aaf07eea10a0221c282be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12d8da10b2137a1e87801556a313e625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a3eb9576531c4ca1077be7cb5ef14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/25/b93c55d2-e375-4abc-8baf-61d6ca70820d.png?resizew=123)
您最近一年使用:0次
9 . 如图,在
中,
,
是
的一个外角.
实验与操作:(1)作
的平分线
;(2)作线段
的垂直平分线,与
交于点
,与
边交于点
,连接
,
;在(1)和(2)的条件下,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94c44345de7d1f37b48def25db8c5e2b.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/721c75fcd58d3d54260aad0f82e09e37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
实验与操作:(1)作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/721c75fcd58d3d54260aad0f82e09e37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee5d273b61cb9fefe41937805246fcd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94c44345de7d1f37b48def25db8c5e2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/26/a8555371-44e6-46b4-a9b3-66c5596f9605.png?resizew=173)
您最近一年使用:0次
10 . 如图,在
网格中,每个小正方形边长为1个单位长度,我们把每个小正方形的顶点称为格点,
均为格点,请按要求仅用一把无刻度的直尺作图,画图过程用虚线表示,画图结果用实线表示.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/25/d9033229-6424-4e07-ba9b-31d496607bdf.png?resizew=318)
(1)在图1中,作
(D在
下方),且
;
(2)在图1中;作
的中点
,在线段
上作点
,使得
;
(3)在图2中;在线段
上作点
,使得
;
(4)在图2中,已知
,在
上作点
,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7684debc1ba5eebfbcfaf790e6757140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/25/d9033229-6424-4e07-ba9b-31d496607bdf.png?resizew=318)
(1)在图1中,作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16aad38b43462ca7a8fb9bc9484ad3a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df4a2a127d89d50d3fde881a9b58ef0c.png)
(2)在图1中;作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea90fb02fd983e66d5b04372af58733.png)
(3)在图2中;在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bd144b98874048426ae5f6fbf836ffb.png)
(4)在图2中,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c365615dd9a240efecaf5d534d1cc067.png)
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