如图,
中,
,
,
交
于点
求证:
.
![](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/f805768a5ffaf8bdfa4bc3b680aafdc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3379f93f65cfb92526ffc4a9859cbded.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/6/f4cb9a52-2776-46a5-b593-bed7ecbb8a85.png?resizew=190)
更新时间:2023-04-05 17:43:04
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,
是半圆
的直径,点
为半圆上一点(不与点
重合),点
是
的中点,过点
作
的切线,交
的延长线于点
,交
的延长线于点
.
与
的位置关系,并说明理由;
(2)若
,
,求
与线段
的长度,并比较二者的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3236e8737e7856627067c0a9606635f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16bab906d4fc26acb1a7f681a3bb2981.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3236e8737e7856627067c0a9606635f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
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解答题-问答题
|
适中
(0.65)
【推荐2】完成下面的求解过程.
如图,
,
,
,求
的度数.
(已知)
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a569e54557b0a496e527b56a821b9f27.png)
( )
∴
( )
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac02cc9aa02a824382a39c2ca1a475c2.png)
.
如图,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c282eae5c69e793011baa59415b3178.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e50ce9ef89a466df68124a1dccff5663.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41bef89ac0dd5ae192cd9c7222d5041b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3e081637bcea5368cc72370bae283b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd706f15eebafc05480646b8bcf1b5c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8afc0b85f3e9abb7199710a79cdcfd1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a569e54557b0a496e527b56a821b9f27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d5d62e9601f327123b87b8ef8cab40.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745484e879076da2f5fc2e635ccfffbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2332c0fbe140539f1be42f263c5e510a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e519cdb0cac3981d8e9610dba507a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac02cc9aa02a824382a39c2ca1a475c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f1e9dcf415eaa6b1fd5b45e20297528.png)
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解答题-问答题
|
适中
(0.65)
【推荐2】如图,点
,
,
,
在直线
上,点
,
在直线
的异侧,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/6/3d2d85bd-3b8f-4e4c-903f-93cb95e39e71.png?resizew=203)
(1)求证:
;
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd81adb13f5a7550b0f94f770900a613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fec9e3bf7ff287df2cbdff8addfaf5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a510a3eb906b3ef0760b0d1723d11ae.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/6/3d2d85bd-3b8f-4e4c-903f-93cb95e39e71.png?resizew=203)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ca10806fc8c3c3efd6859f526b76900.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb01d2b57580731c8b807ac8cffc8ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
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解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知
ABC中,∠ABC=90°,点D、E分别在边BC、边AC上,连接DE,DF⊥DE,点F、点C在直线DE同侧,连接FC,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/21/cda0d0c2-25b8-46cb-954f-1f72caef9cf7.png?resizew=653)
(1)点D与点B重合时,
①如图1,k=1时,AE和FC的数量关系是 ,位置关系是 ;
②如图2,k=2时,猜想AE和FC的关系,并说明理由;
(2)BD=2CD时,
①如图3,k=1时,若AE=2,
=6,求FC的长度;
②如图4,k=2时,点M、N分别为EF和AC的中点,若AB=10,直接写出MN的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db999650f7f40ac6aaf3ff856ea4ca40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55d105c8b9579e90e4dc165fffb7d518.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/21/cda0d0c2-25b8-46cb-954f-1f72caef9cf7.png?resizew=653)
(1)点D与点B重合时,
①如图1,k=1时,AE和FC的数量关系是 ,位置关系是 ;
②如图2,k=2时,猜想AE和FC的关系,并说明理由;
(2)BD=2CD时,
①如图3,k=1时,若AE=2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8884e78eca3768da8f850d12a52ef1a0.png)
②如图4,k=2时,点M、N分别为EF和AC的中点,若AB=10,直接写出MN的最小值.
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解答题-作图题
|
适中
(0.65)
名校
【推荐2】如图,在等腰
中,
,
,点D为
中点,点P从点D出发,沿
方向以每秒
的速度匀速运动到点A.设点P的运动时间为x秒,
的面积为
.
根据学习函数的经验,对函数y随自变量x的变化规律进行探究.
(2)观察y的函数图像,写出一条该函数的性质;
(3)观察图像,直接写出当
时,x的值______.(保留1位小数,误差不超过
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0bbc68f2a65aea126b6e0d2c1081037.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c545764505bb00578a870c5e39493a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e30c48f684a26bffb321567c29e437d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048b61a5fb5f420c6d7de88db5bc3aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da7bcea5a45eeae211f5851f12a7517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d740004cfdade4c185f722dadc27e15.png)
根据学习函数的经验,对函数y随自变量x的变化规律进行探究.
(2)观察y的函数图像,写出一条该函数的性质;
(3)观察图像,直接写出当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55e8f6a02414d8f7dc8e67a47d3c1324.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4646418552dc060ebda1232361a01295.png)
您最近一年使用:0次