如图,点
、
在线段
上,点
在线段
上,点
在线段
上,
与
的延长线交于点
,
,
.
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77334354705b28e67b739d4f1bcd1b5f.png)
(2)若
,且
,求
的度数.
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce8f887360a533f0a25b0b34fb11f0a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ea5d581e0305727d96bcaf3a1d4048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df4d67aa2a39c15abaa0cbc09432f1fb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/14/b8c2824f-a8fa-4f59-9d07-f9fbf738cd98.png?resizew=165)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77334354705b28e67b739d4f1bcd1b5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df1f61d5d495ecc864f82dc5ab94e15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67957279fbc9db4ee982bb09996732d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d9c1e0c3cab6b7bb3229221f4310ab0.png)
更新时间:2023-09-27 19:02:50
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】我们已经学过了对顶角、邻补角、同位角等,知道了它们的特征.现在若有两个角,它们不是同一个顶点,但这两角的两边相互平行,我们就把满足这个条件的两个角称作“平行角”.如图 1,已知
,
,因此
和
是“平行角”.
(1)图1中,证明
;
(2)如图2,延长
到
,可知
和
也是“平行角”,但它们的数量关系是______________.
(3)如图3,
平分
,
平分
,请说明图中的
和
是“平行角”.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c543c3ddc3723fde6bbfca3ea3b921b.png)
(1)图1中,证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4fd85cff10e8f192cfe0b0a8b2f4996.png)
(2)如图2,延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db866ecc0c098bfc32ec8a43b65bdd58.png)
(3)如图3,
![](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/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b69d40b75d582c4b8ffa2369af1d41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d57899ad4774aed9ccc7bd23db72153.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/7/f2d7b29f-c95b-4841-9886-bd6fa7cf9ae5.png?resizew=540)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】已知:如图,点B、C在线段
的异侧,点E、F分别是线段
、
上的点,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/698fbac2-a756-4ccb-b333-7222ee1af680.png?resizew=157)
(1)求证:
;
(2)若
,求证:
;
(3)在(2)的条件下,若
,则
度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/d5d373f72060450fe8f7ec665cb09426.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66215405835d7fb8fc423f8066d2a60.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/698fbac2-a756-4ccb-b333-7222ee1af680.png?resizew=157)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f95312bde51ced84a470efc95f90fdf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4354365ca0929f8a606ed0bf341e4ca.png)
(3)在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/452dcbca55d34128a7c56091ecaf6b62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b7960538cb70fcf641b94864a90190d.png)
您最近一年使用:0次