如图,四边形
中,
,过点D作
,
与C交于点D,与
交于点H.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/15/dead7dab-3498-481e-ac7f-a5e09168bcf8.png?resizew=476)
(1)求证:
为等腰三角形;
(2)若E为
中点,猜想
,
与
三者的数量关系.并证明之
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/935a64a7246cda87c80c273b7f2e4e24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c697facf30880c77a16233cb9938b516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/15/dead7dab-3498-481e-ac7f-a5e09168bcf8.png?resizew=476)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45be9aef38337659a353da9df16edde8.png)
(2)若E为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3064b70f24e9bbcab76e0dc61274b9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589786dd7c3a2679c3230b671cd232d6.png)
22-23八年级上·广东广州·期末 查看更多[8]
广东省广州市桥城中学2022-2023学年八年级上学期数学期末试卷广东省广州市番禺区市桥桥城中学2022-2023学年八年级上学期期末抽测数学试卷广东省梅州市丰顺县颍川中学2022-2023学年八年级下学期开学考试数学试题(已下线)专题13.3 等腰三角形的性质与判定【十大题型】-2023-2024学年八年级数学上册举一反三系列(华东师大版)(已下线)专题13.2 等腰三角形的性质与判定【十大题型】-2023-2024学年八年级数学上册举一反三系列(人教版)(已下线)专题2.2 等腰三角形的性质与判定【十大题型】-2023-2024学年八年级数学上册举一反三系列(苏科版)(已下线)专题2.2 等腰三角形的性质与判定【十大题型】-2023-2024学年八年级数学上册举一反三系列(浙教版)(已下线)专题15.2 等腰三角形的性质与判定【十大题型】-2023-2024学年八年级数学上册举一反三系列(沪科版)
更新时间:2023-01-14 13:48:49
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】综合与实践
(1)【图形探究】如图1,
,点
、
分别在直线
、
上,连接
、
,当点
在直线
的左侧时,
、
、
之间的数量关系为________;(提示:可以过点
作
的平行线)
(2)【问题迁移】如图2,
,点
在
的上方时,
、
、
之间有何数量关系?请说明理由;
(3)【联想拓展】如图3所示,在(2)的条件下,已知
,
的平分线和
的平分线交于点
,则
________(用含有
的式子表示).
(1)【图形探究】如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4505508b3e36db64a207dcdaf8eb22dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35d58f9019097bd05037aefd5c322916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/229b8447cb77e1e7b23f744a3246aefb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d99fcf5860b17cca8daf0cacebb508db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9247c382e25f3c346c90e72089b7202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/6/517842a6-0278-4301-9289-eec30d00f294.png?resizew=197)
(2)【问题迁移】如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/229b8447cb77e1e7b23f744a3246aefb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d99fcf5860b17cca8daf0cacebb508db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9247c382e25f3c346c90e72089b7202.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/6/8df6a6b6-ddd0-45f5-b89b-f4da6856e462.png?resizew=199)
(3)【联想拓展】如图3所示,在(2)的条件下,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80ae8fdef9edf2bc9b38e487e2204943.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/229b8447cb77e1e7b23f744a3246aefb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9247c382e25f3c346c90e72089b7202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b422092a033b48f3baffcbe7a597ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/6/c5105d49-dbd1-457f-9849-3b6d4b15b033.png?resizew=268)
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解答题-问答题
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适中
(0.65)
【推荐2】如图,已知AB//CD,
![](https://img.xkw.com/dksih/QBM/2020/3/28/2429051332771840/2429336910585856/STEM/de15138d7828445a9d1a133a7a952b8a.png?resizew=457)
(1) 求∠1+∠2+∠3的度数.
(2) ∠1+∠2+∠3+∠4 = .
根据以上的规律求∠1+∠2+∠3+…+∠n = .
![](https://img.xkw.com/dksih/QBM/2020/3/28/2429051332771840/2429336910585856/STEM/de15138d7828445a9d1a133a7a952b8a.png?resizew=457)
(1) 求∠1+∠2+∠3的度数.
(2) ∠1+∠2+∠3+∠4 = .
根据以上的规律求∠1+∠2+∠3+…+∠n = .
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,
与
均为等腰直角三角形,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d13132c1607d70c48decf0ca0b86ec2.png)
(1)如图1,点
在
上,点
与
重合,
为线段
的中点,则线段
与
的数量关系是 ,
与
的位置是 .
![](https://img.xkw.com/dksih/QBM/2020/2/27/2408161994465280/2408975988940800/STEM/1f0eea3711b74498822e4649b60ccc31.png?resizew=145)
(2)如图2,在图1的基础上,将
绕点
顺时针旋转到如图2的位置,其中
在一条直线上,
为线段
的中点,则线段
与
是否存在某种确定的数量关系和位置关系?证明你的结论.
![](https://img.xkw.com/dksih/QBM/2020/2/27/2408161994465280/2408975988940800/STEM/c0c9bf5272e94703bbfaee839f4cc47d.png?resizew=134)
(3)若
绕
点旋转任意一个角度到如图3的位置,
为线段
的中点,连接
、
,请你完成图3,猜想线段
与
的关系,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f460edcced5597615113c0fdc95b1dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d13132c1607d70c48decf0ca0b86ec2.png)
(1)如图1,点
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
![](https://img.xkw.com/dksih/QBM/2020/2/27/2408161994465280/2408975988940800/STEM/1f0eea3711b74498822e4649b60ccc31.png?resizew=145)
(2)如图2,在图1的基础上,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f460edcced5597615113c0fdc95b1dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42cd6cb32c3bae7ca9c49425872ec595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
![](https://img.xkw.com/dksih/QBM/2020/2/27/2408161994465280/2408975988940800/STEM/c0c9bf5272e94703bbfaee839f4cc47d.png?resizew=134)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f460edcced5597615113c0fdc95b1dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
![](https://img.xkw.com/dksih/QBM/2020/2/27/2408161994465280/2408975988940800/STEM/1fa243135eea45169ba8022e40c40bdc.png?resizew=162)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】在
中,
,
,垂足为
,点
是
延长线上一点,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/d9ffe100-c5f6-4436-8005-2be1c6bfbeae.png?resizew=299)
(1)如图①,若
,
,求
的长;
(2)如图②,点
是线段
上一点,
,点
是
外一点,
,连接
并延长交
于点
,且点
是线段
的中点,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fa2a58d8943804313b02adc29e2afc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7af3d5765382269f380d39b0ffc9d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/d9ffe100-c5f6-4436-8005-2be1c6bfbeae.png?resizew=299)
(1)如图①,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e2a465e911e3d97fe8be7eaad547b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)如图②,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2f8fcaafdf5bbd0cd5c1d92aeb67e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f166307ca3b86dbd71aed464c497c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfad4095dc1298a44941accb96dda646.png)
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解答题-证明题
|
适中
(0.65)
【推荐1】已知:如图,在
中,
平分
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/15/737bac80-1cc4-47ef-84f2-9b3dc97ddcdc.png?resizew=160)
(1)求证:
是等腰三角形.
(2)若
,
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d021981c03e75b1a246d899dcc64656.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/15/737bac80-1cc4-47ef-84f2-9b3dc97ddcdc.png?resizew=160)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d57d36b474e1a24c90489254d5516f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aa6745cd014fc5e8be582e0d2fcc654.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d29e7c4d6216690152430b09f9cf0c2.png)
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【推荐2】如图.在△ABC中,∠A=90º.AB=AC.O是BC的中点,如果在AB上AC分别有一个动点M、N在移动,且在移动时保持AN=BM.证明△OMN是等腰直角三角形.
![](https://img.xkw.com/dksih/QBM/2020/10/22/2576462856839168/2578404344832000/STEM/9d851c6c-9fdc-4898-82a7-e1c2f46ab3bc.png)
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解答题-证明题
|
适中
(0.65)
【推荐1】课本再现∶
思考:
我们知道,矩形的对角线相等,反过来,对角线相等的平行四边形是矩形吗?
可以发现并证明矩形的一个判定定理:对角线相等的平行四边形是矩形
已知:在
中, 对角线 ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
求证:四边形
是矩形
(2)如图2, 若点
为矩形
边
延长线上一点,且
平分
,
,若
,求
的长为多少?
思考:
我们知道,矩形的对角线相等,反过来,对角线相等的平行四边形是矩形吗?
可以发现并证明矩形的一个判定定理:对角线相等的平行四边形是矩形
已知:在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)如图2, 若点
![](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/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4598486f8c5ac28b1165b76e78105979.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64d5fcee996a47e9cc3cfd4ba108f21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86338536656046e93b53672ade9a78b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
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解答题-问答题
|
适中
(0.65)
【推荐2】如图,
是
的边
上的中线,点
在
上,若
,
与
相等吗?为什么?
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/5d7fc2cd021ddef301baf6ccb2fc8e6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/16/9492ffb2-95bc-46fb-ac83-5042730d772d.png?resizew=133)
您最近一年使用:0次