如图,在
中,
,
,点
在线段
上,
,
平分
交
于
,
,垂足为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/7f0580d6-1f04-4616-a513-5ecd501bf3ed.png?resizew=212)
(1)求证:
是等腰直角三角形;
(2)若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d89ba4036a5d18ec4abed44d7fd8e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ce32435647d7324b3c40a3fa758fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67c015d99f2677951bdcd0447240ef93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/030ed7679083e92787c25de7c78cfc67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af94763811dc980d768767bfe732a8e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/7f0580d6-1f04-4616-a513-5ecd501bf3ed.png?resizew=212)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38d0469336f71edd52dc9148c67db052.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b8accf2726e7f283acf398858faf021.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
更新时间:2022-10-29 12:09:26
|
相似题推荐
解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图所示,已知DE
BC,EF平分∠AED,EF⊥AB,CD⊥AB,求证:CD平分∠ACB .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/12/fbe2434f-8229-440b-9ec7-96c6d622bbe9.png?resizew=154)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐2】已知:如图,点
是线段
上一点,
,
,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dfa223e7b272346649538457c976864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f833649d010895fb30eb0b14de26074d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3d2d3643a9579f2c693ef86909441e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a13ff95a85058f1803a7630c08c443df.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/82050497-0832-4373-8d52-85df5728ce21.png?resizew=236)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】在四边形ABCD中,AB=AD,CB=CD,点P是对角线CA上一点,PE⊥BC于E,
PF⊥CD于F.求证:PE=PF.
PF⊥CD于F.求证:PE=PF.
![](https://img.xkw.com/dksih/QBM/2014/12/11/1573766680461312/1573766686564352/STEM/45b6015a16dc47b18a95e87e3c8671a3.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐2】如图,∠A=∠D=90°,AB=DC,点E,F在BC上且BE=CF.
(1)求证:AF=DE;
(2)若OM平分∠EOF,求证:OM⊥EF.
(1)求证:AF=DE;
(2)若OM平分∠EOF,求证:OM⊥EF.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/12/5954bd4a-bf2c-41eb-9c27-d182ec6746b8.png?resizew=189)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】如图1,在平面直角坐标系中,直线
交
轴于点
,交
轴于点
,点
坐标为
,直线
:
与直线
相交于点
,点
的横坐标为
.
的解析式;
(2)在
轴上是否存在一点
,使得
是以
为腰的等腰三角形?若存在,求出符合条件的点
的坐标;若不存在,说明理由;
(3)如图2,点
是
轴上一动点,过点
作
轴的垂线,分别交
、
于点
,当
时,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9531ec2f291b4ec28200984e906fcb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b1b0b10083d43c9feb9f9d540a0f5fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd8f64ebec4a71a609204458cc54df82.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a8b0d7e169313c2a2d5c278cf968b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(3)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e85daaf3da68c34df2e93ac7f01381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e435815e95a0259bb31f0d475acef6c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
您最近一年使用:0次
解答题-应用题
|
适中
(0.65)
【推荐2】如图是某遮阳伞的侧面示意图.已知支架
长为
米,且垂直于地面,悬托架
米,点E固定在伞面上,且伞面直径
米.当伞面完全张开时,点D,E,F始终共线.为实现遮阳效果最佳,伞面装有接收器可以根据太阳光线的角度变化,自动调整手柄D沿着
移动,以保证太阳光线与
始终垂直,设入射角
.
(1)试说明
与光线的入射角α相等;
(2)某一时刻测得
长为2米,求阴影
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/900206075ce8f1f040d2e3a6685ad51a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5590d0226850c341940e6d9cbab180bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc95af9238cf516b1f60fd4c51b409a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee1ac95fa7736ca1d822e4506a57c797.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/d8034b88-3d67-4e9e-ba5e-eda705967014.png?resizew=197)
(1)试说明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23dc2d2dd56fcc67698c45a6e0e48f80.png)
(2)某一时刻测得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
您最近一年使用:0次