如图,点B、C分别在
的两边上,点D是
内一点,
,垂足分别为E、F,且
.求证:点D在
的平分线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dada4b823d9b13e0dd3cb1e029526cd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/530950d83896ecc7d836da6b15049f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/24/ee217152-4fb6-4f14-aea0-4b3fa2e03134.png?resizew=176)
更新时间:2023-08-16 06:08:03
|
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解答题-证明题
|
适中
(0.65)
【推荐1】如图,四边形中,
,
平分
,
于点H.
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eaabf888ab250fed286a4830de0915b.png)
(2)若
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解答题-问答题
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适中
(0.65)
【推荐2】如图,在
中,
平分
交
于点D,过点D作
于点E,若
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的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
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您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】(1)如图1,在
中,
,
,
,D为
边上一点,
.求证:
平分
.
(2)如图2,矩形
中,
,
,点E是
边上一点,
,连接
,请用无刻度的直尺和圆规在
边上找一点F,使得
.(保留作图痕迹,不要求写出作法)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f76899b3a0bfbbdae7cb1148ad4bf018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f39fdcf98775b0a4960d6bc870eddfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/26/c224ff07-2203-4544-a4a0-7e77f036af87.png?resizew=149)
(2)如图2,矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377b5f7197e5bd1afeea4d931307956a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0ba9fd834b7872cc687bfb8756f6913.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/26/82e25737-fee7-4b74-bdda-eb4209af40b4.png?resizew=133)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,在
中,D,E分别为
,
边上一点,连接
,
,
,过点E向
作垂线,交
的延长线于点F.已知
平分
.
平分
,
.
(1)求证:
平分
;
(2)若
,
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c36ff76f9f1ee12db562cde7a58b8c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c997ea88c1ede2dba74979c2fd9ff8af.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/14/6615011e-6dfb-486f-affd-52bd0f33a73d.png?resizew=290)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a6241af8eadb720f601ee48f74cb9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe5742e2e5da7151259386146724a428.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77b0ee4d3014800b3664cec93be49a9f.png)
您最近一年使用:0次