已知:如图,
,
.
(1)判断
与
的位置关系,并说明理由;
(2)若
,
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0872bf283721f71aa8573002d0556fd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddda5d6f8f54244f6c46b0755d96f82e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/18/14930428-f106-4726-a91e-d0944eeb4e56.png?resizew=168)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a0905a9a6c132396d9eefa2303ce6b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d741e0d538e9a67629ee13017d88e1a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90026b96116424a245b335b1adb886b.png)
更新时间:2023-08-08 10:04:37
|
相似题推荐
解答题-问答题
|
较易
(0.85)
【推荐1】已知,如图a∥b,c∥d,∠1=73°,求∠2和∠3的度数.
![](https://img.xkw.com/dksih/QBM/2021/5/22/2726514312183808/2792417572126720/STEM/46d6dcdc-b6e5-4e55-9ad4-12fd75473e91.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】如图,图①是一种网红弹弓的实物图,在两头上系上皮筋,拉动皮筋可形成平面示意图如图②和图③,弹弓的两边可看成是平行的,即
,各活动小组探索
与
,
之间数量关系时,有如下发现,
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/9/8ec055b6-8ac5-4219-8433-98c0a2209cc0.png?resizew=587)
(1)在图②所示的图形中,若
,
,则
___________
(2)在图⑧中,若
,
,则
_________
(3)有同学在图②和图③的基础上,面出了图④所示的图形,其中
,请判断
,
,
之间的关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42fa5dff377ef08e416547def489def0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca940876c9945a3487ddf97a4cbe94bb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/9/8ec055b6-8ac5-4219-8433-98c0a2209cc0.png?resizew=587)
(1)在图②所示的图形中,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3018c687427b6257767eda4a8c6612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae54a216ed6a5bc56af1f501426ca438.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f271031a3b20308a992fccc4a486752b.png)
(2)在图⑧中,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/945231a30aab29648e11e50f3aa84699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cfb545e6f3a6d90eb36314676e0b55a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b7960538cb70fcf641b94864a90190d.png)
(3)有同学在图②和图③的基础上,面出了图④所示的图形,其中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780d8fd6c6c1deeeb45e15f639719e02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15417741fba20d681ab4414b07339099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85f128dbb8081cbf2e0800306f771842.png)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
【推荐1】如图:
,
平分
,
平分
,
,求证:
.请完成下面的解题过程.
平分
,
平分
(已知)
,
(角平分线的定义)
又
(已知)
.(等量代换)
又
(已知)
(量代换)
( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b77c8ef75793d21d2d5d8bf470a61159.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52376a06c719d0501d727917f76ec20d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22facbd7894b1dcaf6a985e99f33f025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d558048f4591f82e669ae89e20ebc082.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d389e7491681f317ef44426edd5fbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/698a0f6387a7cfe925840199f0eecf26.png)
又
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2cc70a2d39cb31f1c887ed1a9bbc4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54bb3caba2b157026325b3d8a5404fc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f617fa80f09fc245909492f5335ea5c.png)
又
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1db461beba62a6587040cd8d5d96f09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f617fa80f09fc245909492f5335ea5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc59507fa662b061cd49580e3a88bb46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40662d524ba4caaa29694d72dc357bb6.png)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
【推荐2】如图,点
在线段
上,
,
.
.
(2)若
平分
,
,求
的度数.
![](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/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/597bbee9476e853b2dbd7f30f367444e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d1e679d83e4675cdef9b81a62c53f21.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9d16fab0f52c8af5abba0bf19a06ea0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b89616b8f5a62c7b06aec9f41454619e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
名校
【推荐1】如图,已知
,点
在
的延长线上.
求证:
.
当
时,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1459344b2625ac718190c719cc3e5fda.png)
![](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/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53c03ca5195b3bf8ebaae3b9cf2508e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e8135d48163648385757454dda741b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a2db6311e228ed33b6c71d0a5918cf.png)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
【推荐2】如图①,在
中,
,D是
的中点,点E在
上,连接
,
.
(1)求证:
;
(2)如图②,若
的延长线交
于点F,且
,垂足为F,原题设其他条件不变,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/12/64bb51e8-3204-40b0-a006-d12c8d456f3e.png?resizew=139)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/12/2a9397d4-d5a3-4ae9-a9c0-1ac45b114ba3.png?resizew=143)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a702c324e0c76150540c3d32df802077.png)
(2)如图②,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f2a245381e615882ee5feb7793a1df6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09016c2927681b62590a3d835ff028c.png)
您最近一年使用:0次