(1)如图1,
是直线
内部一点,
,连接
.
①当
,
,则
;
②猜想图1中
的关系并验证;
(2)如图2,
,已知
,
,求
的度数.(用含有
代数式表示)
与平行四边形
的边
交于点
,与边
交于点
,图3中
分别是被射线
隔开的
个区域(不含边界),
是位于以上两个区域内的一点,猜想
的关系(不要求说明理由)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c4cd264c97c1f261229925cc5a6761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7060014d42e631ebef1453dfa556a49d.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd2a51baf0118194d30a6a0179e2ea8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee2ef38925946da1145a68651da67da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
②猜想图1中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70cc1bf5f44e6a948496a8b71b8afaed.png)
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e2c8de480cd2e649b3230672594fc47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2883e8d5eb46991be74fa91633aa65d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/488a2b41d6c250b96f005637e0b6e6dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c57b07f75e97d9f84718bd495ebcf4.png)
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c57b07f75e97d9f84718bd495ebcf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d8e3988a3956e87e2510cfdb9ee1ab.png)
22-23七年级下·上海闵行·期中 查看更多[9]
上海市闵行区2022-2023学年七年级下学期期中考试数学试题(已下线)上海七年级下期末真题精选(压轴60题16个考点专练)-【满分全攻略】2022-2023学年七年级数学下学期核心考点+重难点讲练与测试(沪教版)(已下线)专题01 相交线与平行线(考点清单,5个概念2个判定2个性质2种方法2种思想)-2023-2024学年七年级数学下学期期中考点大串讲(人教版)(已下线)上海市七年级下学期期中模拟03(沪教版:实数、相交线平行线)-2023-2024学年七年级数学下学期期中考点大串讲(沪教版)(已下线)专题08 期中解答题压轴汇编【好题汇编】-备战2023-2024学年七年级数学下学期期中真题分类汇编(上海专用)(已下线)专题04 平行线(6大题型)【好题汇编】-备战2023-2024学年七年级数学下学期期中真题分类汇编(上海专用)(已下线)上海市七下期中真题精选(压轴大题50题7个考点分类专练)-2023-2024学年七年级数学下学期期中考点大串讲(沪教版)(已下线)上海市七年级下学期期末必刷压轴60题(14个考点专练)-2023-2024学年七年级数学下学期期末考点大串讲(沪教版)(已下线)专题02 相交线平行线(考题猜想,易错、好题7个考点50题专练)-2023-2024学年七年级数学下学期期末考点大串讲(沪教版)
更新时间:2023-04-28 21:41:41
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适中
(0.65)
【推荐1】如图,在四边形ABCD中,
,∠BAD=90°,点E在AC上,EC=ED=DA.求∠CAB的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/26/a343b128-704c-4778-be13-d93c4d6599ce.png?resizew=172)
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【推荐2】已知,如图1,直线
,
、
的平分线相交于点M.
的度数;
(2)如图2,
,
的平分线相交于点
,请写出
与
之间的等量关系,并说明理由;
(3)在图2中作
,
的平分线相交于点
,作
,
的平分线交于点
,作
,
的平分线交于点
,请直接写出
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b6a23d521606a35298bbf147f7f830c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7724af2445c723d1392aed54d210ed3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c96cf4e88a6da06b50c07bd1f563f7c1.png)
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3b59874dae8b394a4e434aa3875708a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4545a853b1ac118b29d0fdddbd7d3ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e85e6939fb78dc9ea7685d5d3ffb166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a742abf1b0702125a0c77cbfbef118ca.png)
(3)在图2中作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d16fe891c1b83f076241a73f5c6cfcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22100200da5cd7f1b66d2ee2324894b.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc26a65daddae06df13f05d4232adac1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669bd71131448afdaef41a25c9eb5803.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32efe4eff75508cb93e828c735dcb695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce951010654210fd7cc35c84d59cf9d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e10bda11e9aea0ddd045a3951cfa536.png)
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解答题-问答题
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名校
【推荐1】如图,EF∥AD,∠1=∠2.
![](https://img.xkw.com/dksih/QBM/2021/7/11/2761667661463552/2784761210650624/STEM/4fc199c4e6ab4acea44abf7050a18746.png?resizew=169)
(1)若∠B=55°,求∠BDG的大小;
(2)若AD平分∠BAC,求(
∠DGC+∠FEA)的大小.
![](https://img.xkw.com/dksih/QBM/2021/7/11/2761667661463552/2784761210650624/STEM/4fc199c4e6ab4acea44abf7050a18746.png?resizew=169)
(1)若∠B=55°,求∠BDG的大小;
(2)若AD平分∠BAC,求(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
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适中
(0.65)
【推荐2】如图,根据图形填空:
已知:∠DAF=∠F,∠B=∠D,AB与DC平行吗?
解:∠DAF=∠F ( )
∴AD∥BF( ),
∴∠D=∠DCF( )
∵∠B=∠D ( )
∴∠B=∠DCF ( )
∴AB∥DC( )
已知:∠DAF=∠F,∠B=∠D,AB与DC平行吗?
解:∠DAF=∠F ( )
∴AD∥BF( ),
∴∠D=∠DCF( )
∵∠B=∠D ( )
∴∠B=∠DCF ( )
∴AB∥DC( )
![](https://img.xkw.com/dksih/QBM/2019/2/16/2142146218409984/2142875887632384/STEM/11f53bb8106141a592a861c53dfb69d3.png?resizew=249)
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解答题-证明题
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适中
(0.65)
名校
【推荐1】如图,在平行四边形
中,
平分
,交对角线
于点
.
的平分线,交对角线
于点
;(不写作法和证明,保留作图痕迹)
(2)在(1)所作的图形中,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727ad3e630a224303d6d3b8ad5c114ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(2)在(1)所作的图形中,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86d1125b47dec1c5e93143ee59ad862a.png)
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【推荐2】如图,在
中,点
是
延长线上的一点,
与
交于点
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/17/fce17228-9adf-45ae-946a-aa56b4611831.png?resizew=171)
(1)求证:
;
(2)若
的面积为1,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81986efd8301a22407e407184420ad01.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/17/fce17228-9adf-45ae-946a-aa56b4611831.png?resizew=171)
(1)求证:
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(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
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