已知:直线
,点
、
分别在直线
,
上,点
为平面内一点.
(1)如图1,猜想
,
,
的数量关系并说明理由.
(2)利用(
)的结论解决问题:如图2,已知
,
平分
,
平分
,
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/23/c25fdd10-169e-4ad6-84b4-45843f2da948.png?resizew=303)
(1)如图1,猜想
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ea8be9535f942121f6f6d873d03272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/435f30095577dc714634354f5ad27715.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2224bb7e017b4d687e1d4f70ce3cd7.png)
(2)利用(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e7dec88ec56c8a7a95bf554877f3605.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/435f30095577dc714634354f5ad27715.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ffc7d1af9053b027cf9e726f5367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2224bb7e017b4d687e1d4f70ce3cd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ec8012f09c7f5496c84f229ab769131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d034d287d9e7482e6521a50864f99643.png)
更新时间:2023-06-15 11:05:55
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图,点P在∠ABC内,点E,F分别在∠ABC的边BA,BC上,ED平分∠AEP,连结PE,PF.若∠B=∠PFC,∠PED=36°,求∠P的度数.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/27/16ef78a0-9adc-4fe8-8f51-a28510378825.png?resizew=206)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,
是
的平分线,
是
的平分线.
(1)若
,
,求
的度数
(2)若
,求
的度数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51894a54773c0ea6f090c05777811f38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22df2977de56cc69be0c1e847653d7a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/7/5778531b-84c2-4079-bb18-2147c618b657.png?resizew=137)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e4f8da439877e68932861ce88a125e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67162f337c1b14c3dc8d4b86b0d76963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbee6d5731d6f4bb1e4f2ba3d89b7dc.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/950a96f120b449d9cf5c1709867c3d2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbee6d5731d6f4bb1e4f2ba3d89b7dc.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,已知
,
.
;
(2)若
,
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727658b00efa0920188efb4051a3c92c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c226581e14091779321c9fe91160ceef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ef3222a962b0a3b9bb1f4574b41bd79.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd573e8152b1b0badce22bfebd16e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c75f4418fe4057f542bf15f33060d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】已知,直线AB//DC.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/22/612ef494-7e2b-43bb-ad21-9e67881fdb07.png?resizew=458)
(1)如图
,当
,
时,直线
平分
,直线
平分
交直线
于
补全图形并求
的大小.
(2)如图
,点
在直线
、
之间,
与
的角平分线相交于点
,写出
与
之间的数量关系,并说明理由.
(3)如图
,点
落在
外,
与
的角平分线相交于点
,
与
的数量关系是否发生变化,并说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/22/612ef494-7e2b-43bb-ad21-9e67881fdb07.png?resizew=458)
(1)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fffa3d9c32da53b0ea0c338012ea20c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa18c2a78c400c80a5760743f31771c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9290b887e88e8d2fd774a7314e2ca73a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8b201c0b1a56b34d73edd645222957a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac3c1375c64dceef45846308a418cf7f.png)
(2)如图
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b48771358b76e240743bb49c497ef7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebf7cc67acfa50ef6b21d9aa379e604a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a07d6f1b7b75c50f767f2e5886756832.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac3c1375c64dceef45846308a418cf7f.png)
(3)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b48771358b76e240743bb49c497ef7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebf7cc67acfa50ef6b21d9aa379e604a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a07d6f1b7b75c50f767f2e5886756832.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac3c1375c64dceef45846308a418cf7f.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】如图,
,定点E,F分别在直线AB,CD上,在平行线AB,CD之间有一个动点P,满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/18/2eb1d0c8-9a8c-43cf-b104-ef29b25525f6.png?resizew=193)
(1)试问:∠AEP,∠CFP,∠EPF满足怎样的数量关系?
解:由于点P是平行线AB,CD之间一动点,因此需对点P的位置进行分类讨论.
①如图1,当点P在EF的左侧时,猜想∠AEP,∠CFP,∠EPF满足的数量关系,并说明理由;
②如图2,当点P在EF的右侧时,直接写出∠AEP,∠CFP,∠EPF满足的数量关系为______.
(2)如图3,QE,QF分别平分∠PEB,∠PFD,且点P在EF左侧.
①若∠EPF=100°,则∠EQF的度数为______;
②猜想∠EPF与∠EQF的数量关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075b213cd00b7b188210392bf06d326e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/18/38ba2be5-facf-4ed9-9606-6192425c51ca.png?resizew=141)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/18/f0ff4b32-5d53-4d3e-879f-d18130f8ac2e.png?resizew=159)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/18/2eb1d0c8-9a8c-43cf-b104-ef29b25525f6.png?resizew=193)
(1)试问:∠AEP,∠CFP,∠EPF满足怎样的数量关系?
解:由于点P是平行线AB,CD之间一动点,因此需对点P的位置进行分类讨论.
①如图1,当点P在EF的左侧时,猜想∠AEP,∠CFP,∠EPF满足的数量关系,并说明理由;
②如图2,当点P在EF的右侧时,直接写出∠AEP,∠CFP,∠EPF满足的数量关系为______.
(2)如图3,QE,QF分别平分∠PEB,∠PFD,且点P在EF左侧.
①若∠EPF=100°,则∠EQF的度数为______;
②猜想∠EPF与∠EQF的数量关系,并说明理由.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】已知,
,点C是直线
,
下方一点,连接
,
.
![](https://img.xkw.com/dksih/QBM/2023/10/23/3352388233445376/3367351155744768/STEM/a7e6b387a729409997ec00627152f2cd.png?resizew=495)
(1)如图1,求证:
;
(2)如图2,若
,
分别平分
和
,
所在的直线相交于点H,若
,求
的度数;(用含
的式子表示)
(3)如图3,若
,
分
和
两部分,且
,
,直线
,
相交于点H,则
____________.(用含n和
的式子表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd81adb13f5a7550b0f94f770900a613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://img.xkw.com/dksih/QBM/2023/10/23/3352388233445376/3367351155744768/STEM/a7e6b387a729409997ec00627152f2cd.png?resizew=495)
(1)如图1,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e43f199847e5c9888f13f9931719ab3e.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7d19f963f7c803bcfcbb265ec6d4304.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cbb2b5a1ca80ceaa5b6325205bf78fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f72e241b4442664a2ddc13fae396bff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(3)如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f69fd8bd12ea8a1adc3b6b682b20ed96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df9a3b1bd779c562043cdbef41511aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/566ae8f43e42451578ac41fce0a756be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82e07ee15941cd8831b875342880f684.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
您最近一年使用:0次