如图,
于点B,
于点C,
平分
交
于点E,点F为线段
延长线上一点,
.
(1)则下列结论正确的有: .(只填序号)
①
;
②
;
③
;
(2)若
,求
的度数.(写出推理过程)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e51b89f545616ef48f3706850107ad95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b6255c5a1cd6fef41c1eb1c3c0f07eb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/22/e930d28b-18ad-493d-921e-9c6e48e4da16.png?resizew=268)
(1)则下列结论正确的有: .(只填序号)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e20b391f1b76349da6516b43d0191e35.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8781208b8fe41342b9bd8b20456cdba.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167dc80bad1e98a81fa4084455215b6e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92c2c5df663fcba2a8a7e16ad8c6d29b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c36ff76f9f1ee12db562cde7a58b8c3.png)
更新时间:2023-08-02 10:20:55
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】计算:
(1)老师在黑板上写了一个正确的演算过程,随后用手捂住一个多项式,形式如下:
②若
,
,求所捂多项式的值.
(2)已知同一平面内,
,
.
①利用手中的三角板,画出图形,并求出
的度数;
②若
平分
,
平分
,求
的度数.
(1)老师在黑板上写了一个正确的演算过程,随后用手捂住一个多项式,形式如下:
.
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e8ebd7c4463e7311f7ab4d7cd7d241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2f3fa679bb55ded25a9b72a8e788cb1.png)
(2)已知同一平面内,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ccc37b189fa2cbc269ca0b233dac37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72dbe710cca6662be5cc0c26a0d12a4.png)
①利用手中的三角板,画出图形,并求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0e1e2a60c37ebc303d4fc2bf3d6a234.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22df2977de56cc69be0c1e847653d7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fed1f57a835af4e9022e27603d12d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbee6d5731d6f4bb1e4f2ba3d89b7dc.png)
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解答题-问答题
|
适中
(0.65)
【推荐2】如图,
和
都是直角,射线
是
的平分线.
(1)比较
和
的大小,并说明理由;
(2)当
时,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed66570f697459aba9daa2eaf9460bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e7b8a59f8d66176463f3d71f882a26.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/a5dbe2df-7625-4a09-8f77-0ffdc62ecf1a.png?resizew=179)
(1)比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fed1f57a835af4e9022e27603d12d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9f91270ddbe1cf3c1362e1b95aee14.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5402eddd83ecdda7acff7549f177ff0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbee6d5731d6f4bb1e4f2ba3d89b7dc.png)
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解答题-问答题
|
适中
(0.65)
【推荐1】已知:在
中,
,
平分
交
于点
.
(1)如图①,
于点
,若
,求
的度数;
(2)如图①,
于点
,若
,求
的度数(用含
的式子表示);
(3)如图②,在
中,
于点
,
是
上的任意一点(不与点
,
重合),过点
作
于点
,且
,请你运用(2)中的结论求出
的度数;
(4)在(3)的条件下,若点
在
的延长线上(如图③),其他条件不变,则
的度数会发生改变吗?说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce6f337c00a6d4bf1e7580d8888db3d6.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/7/4eda4697-ba51-48e1-81ed-1ca4bb482a0c.png?resizew=651)
(1)如图①,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/203eccb748bee663499f6ccd541d166e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e7106619c08f2bcc1d21f846e8a0de.png)
(2)如图①,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c65d3c0b01e2dc9a6aa74a8e3d0fc4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e7106619c08f2bcc1d21f846e8a0de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
(3)如图②,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7699dd30e08702bfc6499eb9c89e54a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/721ba925c909efa45dde2fe31812fad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ca0ea573af39647bbb44977ed1eeb2.png)
(4)在(3)的条件下,若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ca0ea573af39647bbb44977ed1eeb2.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】已知直线
,
,垂足为点O,点A,B分别在直线
,
上.点P是平面上任一点,连接
,
.
(1)当点P在如图1所示位置时,
,
,则
___________
;
(2)当点P移动到如图2所示位置时,求
,
,
之间的数量关系,并说明理由;
(3)如图3,在(2)的条件下分别作
,
的角平分线交于点Q,
①若
,求
的度数;
②请直接写出
和
的数量关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4bed81b3e3b9de4e36262e7c57a8c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/6/a73beb2d-c5d8-4021-83e1-49693453ebb8.png?resizew=537)
(1)当点P在如图1所示位置时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9216cdec8aab0fd717c3bdbe29eb989f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e4bb0d9bb3f3bfb1973d1cc2b72dcf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a84b7de4bcbaa36f542b7ac3886bba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)当点P移动到如图2所示位置时,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41a84f45f1a383377ebfb4da189e5f7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27eac848aa379fb7453ccd63f95760d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.png)
(3)如图3,在(2)的条件下分别作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41a84f45f1a383377ebfb4da189e5f7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27eac848aa379fb7453ccd63f95760d5.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae589f647c8864f89d5610fb28158315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/595522dfc96cc92f1d84ea0f298bb738.png)
②请直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19768d8c55deb4973820aeab7a224e6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/595522dfc96cc92f1d84ea0f298bb738.png)
您最近一年使用:0次