如图,BE⊥AC、CF⊥AB于点E、F,BE与CF交于点D,DE=DF,连接AD.
(1)求证:∠FAD=∠EAD;
(2)连接BC,判断线段AD与线段BC的关系,并说明理由.
(1)求证:∠FAD=∠EAD;
(2)连接BC,判断线段AD与线段BC的关系,并说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/3616175a-6c81-450d-9f48-280af691dd5b.png?resizew=152)
更新时间:2021-01-17 16:30:17
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【知识点】 全等三角形综合问题
相似题推荐
解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,在△
中:
![](https://img.xkw.com/dksih/QBM/2022/5/13/2978251121852416/2979374648303616/STEM/08bac180593847dc924d0e213ee1f656.png?resizew=168)
(1)下列操作中,作
的平分线的正确顺序是________(将序号按正确的顺序写在横线上).
①分别以点
、
为圆心,大于
的长为半径作圆弧,在
内,两弧交于点
;
②以点
为圆心,适当长为半径作圆弧,交
于点
,交
于点
;
③画射线
,交
于点
.
(2)连接
、
,通过证明△
≌△
,得到
,从而得到
是
的平分线,其中证明△
≌△
的依据是________(填序号).
①
;②
;③
;④![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cbfd199e0ba3e1ec7016a44454e7a3c.png)
(3)若
,
,
,过点
作
于
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://img.xkw.com/dksih/QBM/2022/5/13/2978251121852416/2979374648303616/STEM/08bac180593847dc924d0e213ee1f656.png?resizew=168)
(1)下列操作中,作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
①分别以点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94e1ca12da27075e5241b7c7ce74672.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
②以点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
③画射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/438f34bc8b04e8c494b91306ac6fe352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ffc7d1af9053b027cf9e726f5367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff36d9348c57fd55644d5d748aa8e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602be0eaf97919672895cdaffc7a473e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ecb138a844ef11bb3214cff0a475c9b.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/bff36d9348c57fd55644d5d748aa8e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602be0eaf97919672895cdaffc7a473e.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec76570a0ddc83c103a4b77589d80701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a2ba04decd9d9204ec64d567af55721.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9970629e91021aa64fb871c83746418c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cbfd199e0ba3e1ec7016a44454e7a3c.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae8221601c7bd5c51fd520615581fa1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b801744d7ad085f3934ecbb1474dfee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐2】已知:等腰直角
,
,
,
,将
沿CE折叠,使CA落在直线CH上,BM是
的平分线,交AC于M,交CH于N,连接EN.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/5/0588fafd-eae3-473e-bf8d-e887d758b580.png?resizew=291)
(1)请说明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7f63ee2c50a84a8e1875c7760a2d686.png)
(2)试判断CE与BM的关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a355958abf7dc0f2eb949584cb87907b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d55963a9b9b02737110f57a377b41cb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/5/0588fafd-eae3-473e-bf8d-e887d758b580.png?resizew=291)
(1)请说明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7f63ee2c50a84a8e1875c7760a2d686.png)
(2)试判断CE与BM的关系,并说明理由.
您最近一年使用:0次