如图,直线
与
相交于点
,
,
分别是
,
的平分线.
(1)写出
的补角;
(2)试判断
和
的位置关系,并说明理由:
(3)若
,求
和
的度数.
![](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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418ebb89d29f4f631b055c911e8d178a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7307ac7510cf35f74337d368b94da4e5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/5/dbd4f2f8-6352-404f-a36a-e31eb52dceb6.png?resizew=155)
(1)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbee6d5731d6f4bb1e4f2ba3d89b7dc.png)
(2)试判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c010999911d55375ce36d40e8711743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e7b8a59f8d66176463f3d71f882a26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2557547eecdc826b8282058802d217.png)
22-23七年级下·全国·期中 查看更多[6]
(已下线)期中模拟预测卷01(测试范围:第五、六、七章)-2022-2023学年七年级数学下学期期中期末考点大串讲(人教版)(已下线)第4章 相交线与平行线(A卷·知识通关练)-【单元测试】2022-2023学年七年级数学下册分层训练AB卷(湘教版)湘教版七年级上册第四章图形的认识单元测试数学试题河南省安阳市安阳县等2地鹤壁市实验学校等2校2022-2023学年七年级下学期3月月考数学试题广西壮族自治区河池市都安瑶族自治县民族实验初级中学2022-2023学年七年级下学期6月月考数学试题(已下线)第09讲 两条直线的位置关系-【寒假自学课】2024年七年级数学寒假提升学与练(北师大版)
更新时间:2023-09-25 23:54:06
|
相似题推荐
解答题-作图题
|
适中
(0.65)
【推荐1】如图,已知
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/26/6c6d7941-e353-4532-b512-7ebfb3830cbc.png?resizew=150)
(1)尺规作图:在线段
的下方,以点D为顶点,作
(不写作法,保留作图痕迹);
(2)在(1)的条件下,请说明
;
(3)若
,
平分
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c0aa4c793921fdaa5d430cb90d78ca6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/26/6c6d7941-e353-4532-b512-7ebfb3830cbc.png?resizew=150)
(1)尺规作图:在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4873be1b3b4f48cc0d710bee422659b.png)
(2)在(1)的条件下,请说明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1192fc83f2c50f64fcfa5c86f2a741e.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80621aaf8866edfeb2f68cb2d79c2ff1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b28f28ced0531d1df34fcf04c6c67f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f06fa79d51c7ea65e036265860455c2.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图所示,已知
,直线
交
于A,交
于D,直线
交
于B,交
于C,
平分
,
平分
.
(1)试说明
;
(2)若
,
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/027830fc47290062692964077ee481e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.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/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727ad3e630a224303d6d3b8ad5c114ba.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/3/cbe49bef-72f4-47d8-bb95-ccc54fb3829b.png?resizew=176)
(1)试说明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a116793ea204a0f1a03185bfa43e904b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0612708c980c4e8927fe8b0c5b11ff26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fdd7a7dcc801f20d1b59fe1798bff07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4598486f8c5ac28b1165b76e78105979.png)
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解答题-问答题
|
适中
(0.65)
【推荐1】点O为直线
上一点,过点O作射线
,使
,一直角三角板的直角顶点放在点O处.
(1)如图1,将三角板
的一边
与射线
重合时,则
______
;
(2)如图2,将图1中的三角板
绕点O逆时针旋转一定角度,当
恰好是
的角平分线时,求
的度数;
(3)将图1中的三角尺
绕点O逆时针旋转
的过程中,设旋转的角度为
度,在旋转的过程中,能否使
?若能,求出的度数;若不能,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f94438615778d57a6363a92be3679c05.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/20/bc644ccd-74bf-4283-aae6-21efa8e0c672.png?resizew=408)
(1)如图1,将三角板
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3711e331195e55e1c0133b0286d61a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45739116f428f7c6c5964de72a1fa101.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f55c6ac896ab4277fae2230a6e10b0.png)
(2)如图2,将图1中的三角板
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3711e331195e55e1c0133b0286d61a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7307ac7510cf35f74337d368b94da4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed66570f697459aba9daa2eaf9460bcb.png)
(3)将图1中的三角尺
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3711e331195e55e1c0133b0286d61a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe639eab78eafd2d40ea70aa5d3f21d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab82354eacaaea15db9d2f187f941456.png)
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解答题-问答题
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适中
(0.65)
【推荐2】如图,AB与CD交于点O,EO⊥AB.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/90419cf5-7839-4d64-9995-ea876a92ef7d.png?resizew=165)
(1)若AB在东西方向上,点C在点O的南偏西20°方向上,则点D在点O的 方向上;
(2)若∠EOD=28°,求∠AOC的度数;
(3)若∠AOC:∠BOC=1:2.求∠EOD的度数.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/90419cf5-7839-4d64-9995-ea876a92ef7d.png?resizew=165)
(1)若AB在东西方向上,点C在点O的南偏西20°方向上,则点D在点O的 方向上;
(2)若∠EOD=28°,求∠AOC的度数;
(3)若∠AOC:∠BOC=1:2.求∠EOD的度数.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,
,
,求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
.
请将下面的证明过程补充完整.
证明:
∵
(已知),
(
),
∴
( ),
又∵
(已知),
∴
( ),
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
(
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b4480dc6ec94df13af39b0c3200afd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d1fc6a7e43712a09db5231d8f260b72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/18/2b2ef545-036f-4917-9598-2c3ed0418f90.png?resizew=174)
请将下面的证明过程补充完整.
证明:
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b4480dc6ec94df13af39b0c3200afd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99009ceed9b65d07d03329133911920f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0e28d6fc81252abcee56a07abb8fd70.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a01d1ca7b880b5861f9b93e7de4f3c38.png)
又∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d1fc6a7e43712a09db5231d8f260b72.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/553bff079d0ab7bf24a19d44b224ee46.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0e28d6fc81252abcee56a07abb8fd70.png)
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解答题-证明题
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适中
(0.65)
名校
【推荐2】在横线上填上适当的内容,完成下面的证明.
已知,直线a,b,c,d的位置如图所示,∠1+∠2=180°,∠3=∠4,求证:
.
∵∠1+∠2=180°( ),
∠2+∠3=180°(平角的定义),
∴ =∠3( ),
又∵∠3=∠4(已知),
∴∠1=∠4 ( ),
∴
( ).
已知,直线a,b,c,d的位置如图所示,∠1+∠2=180°,∠3=∠4,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3407b09c99185a79cfe8e9a7e03604a.png)
∵∠1+∠2=180°( ),
∠2+∠3=180°(平角的定义),
∴ =∠3( ),
又∵∠3=∠4(已知),
∴∠1=∠4 ( ),
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3407b09c99185a79cfe8e9a7e03604a.png)
您最近一年使用:0次