已知:如图,在
中,
,
于
,
于
,
相交于
,连接
.求证:
平分
.
![](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/70734a8e672376bb0bd1522e229f86a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f913298f0fae9f55377a8deab9f099dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a03841966d8142fa4a4aed023e37931.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
更新时间:2024-05-06 16:20:51
|
相似题推荐
解答题-证明题
|
较易
(0.85)
【推荐1】如图,
,
,
.(在已给点的条件下解答,不添加字母)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/3df7c3b0-5e83-49ea-9e92-b394a71e072d.png?resizew=165)
(1)求证:
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a2ab6940dca62be1f3b2b5f8531990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/208e8b5dfd8da1f3945e8568a7ea5bf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/3df7c3b0-5e83-49ea-9e92-b394a71e072d.png?resizew=165)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9c0b626af206ace0413d6f732f857c7.png)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
【推荐2】补充完成下列推理过程:
如图,在
中,
,点D,E分别是
上的点,且
,连接
,若
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/a31819eb-f389-4cc1-af6b-1c877e3f8a75.png?resizew=208)
求证:
.
证明:∵![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4354365ca0929f8a606ed0bf341e4ca.png)
∵
_______(______)
且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/102e836344156ea835d7d4e9b4120fe8.png)
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/022e30f968daab3c8a4ce20b540c0143.png)
又∵![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d35861e383645b58c3ae3304bd665731.png)
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b09196044f4c0d105cff56e433b0236b.png)
在
和
中.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df41799ad1098dbd741f3b47a9366e32.png)
∴
(_______)
∴
(_______)
如图,在
![](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/8cca04b2a2b61d62a809776670a60c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421291381be28da4bd16560fd383b4a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c57b27cb575e47c390ecb51d35bb164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/102e836344156ea835d7d4e9b4120fe8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/a31819eb-f389-4cc1-af6b-1c877e3f8a75.png?resizew=208)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b34233772c4c26d6669499d9b1f15a.png)
证明:∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4354365ca0929f8a606ed0bf341e4ca.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d613d2af4b6410d404d5917dfc33f7e6.png)
且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/102e836344156ea835d7d4e9b4120fe8.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/022e30f968daab3c8a4ce20b540c0143.png)
又∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d35861e383645b58c3ae3304bd665731.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b09196044f4c0d105cff56e433b0236b.png)
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2036191be2322003aaee6bb411868327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df41799ad1098dbd741f3b47a9366e32.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/453f7ffb3b29d31c8a05be10cf66e4bf.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b34233772c4c26d6669499d9b1f15a.png)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
【推荐1】已知:如图,
平分
,
,
,垂足分别为点F,G,
是
的垂直平分线.
求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b400a6c61254b81d4ccc5a2a7cf4c967.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ef8d4792c62c0dcf35004df43a25d5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827beb23a9fe02a8b588645bcb82ce67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fb65161f9508867ed7847606781fa7e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/3/ad746d4f-d422-46f7-b57b-d3ae4a74e7d3.png?resizew=138)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
名校
【推荐2】已知:如图点
在同一直线上,
,过
分别作
,
,连接
,
,
,
交
于点
,若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4afea380b786d73890e9b2f1ac3e6878.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ce1475f537b4ad21775bfaa16daa0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fbbd17c89f03dbb61cd6ffdb9a0344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f2a245381e615882ee5feb7793a1df6.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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c220eadc312101e2fb89dfe920f7b30d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9df74db2bf69b983778d700e17f0c66.png)
![](https://img.xkw.com/dksih/QBM/2020/5/15/2463291396964352/2463803914223616/STEM/2b4a9bab6e0f4016b919af3852071148.png?resizew=211)
您最近一年使用:0次