如图,已知点
在
的直径
延长线上,点
为
上,过
作
,与
的延长线相交于
,
为
的切线,
,
.
![](https://img.xkw.com/dksih/QBM/2020/2/1/2389724769624064/2390461655244800/STEM/93c15521df3d49628457fcc2919bb0be.png?resizew=194)
(1)求证:
;
(2)求
的长;
(3)若
的平分线与
交于点
,
为
的内心,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0532fccfa9bae5ed1b954b9f4a2c94d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86338536656046e93b53672ade9a78b3.png)
![](https://img.xkw.com/dksih/QBM/2020/2/1/2389724769624064/2390461655244800/STEM/93c15521df3d49628457fcc2919bb0be.png?resizew=194)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df34369163e511f14028168cb0b21186.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
更新时间:2020-02-02 18:29:35
|
相似题推荐
解答题-问答题
|
困难
(0.15)
【推荐1】在平面直角坐标系
中,抛物线
分别交x轴于点A、B,交y轴于点C,点A的坐标为
,连接AC、BC,过点B作
交y轴于点D.交
于点E,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/12/63e9107b-3657-4cfb-8594-ac53319171a9.png?resizew=288)
(1)如图1,求抛物线解析式;
(2)如图2.点P为抛物线第一象限上的点,连接AP交线段
于点F(F不与C、D重合),设点P的横坐标为t,
的长为d,求d与t的函数关系式(不要求写出自变量t的取值范围);
(3)如图3,在(2)的条件下,连接
,点G为BF上.一点.连接
,若
,
,求点P坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ceba6b11658f2cc227b1f550ba25c3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c99bba4fccdbf16478e9aaf7926924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d320f180419175d75eebc618cc458b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/12/be94f0d1-305f-4b8a-9c95-eab906dc074f.png?resizew=293)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/12/63e9107b-3657-4cfb-8594-ac53319171a9.png?resizew=288)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/12/c41865a7-273d-4f03-8da7-99de54924cee.png?resizew=311)
(1)如图1,求抛物线解析式;
(2)如图2.点P为抛物线第一象限上的点,连接AP交线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faee0268e5ede6318697e5a8509dd6f7.png)
(3)如图3,在(2)的条件下,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c4eccda4edcee29a5f15609e85106df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d371af3b2d8cf56dd5643625851951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2008654fcc8bd92b9d69ff0bf4129931.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b759c8d1671a035b13b5b60d483eb24d.png)
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【推荐2】定义:在凸四边形中,我们把两组对边乘积的和等于对角线的乘积的四边形称为“完美四边形”.
(1)在正方形、矩形、菱形中,一定是“完美四边形”的是 .
(2)如图1,在“完美四边形”ABCD中,AB=AD=CD=2,BC=
,AC=3,求线段BD的长.
(3)如图2,⊙O内接四边形EFGH,GE为⊙O的直径.
①求证:四边形EFGH为“完美四边形”.
②若EF=6,FG=8,FH是否存在一个值使四边形EFGH的面积最大?若存在,求出FH的值;若不存在,请说明理由.
(1)在正方形、矩形、菱形中,一定是“完美四边形”的是 .
(2)如图1,在“完美四边形”ABCD中,AB=AD=CD=2,BC=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a7b702ada1dd80123e4041271d521.png)
(3)如图2,⊙O内接四边形EFGH,GE为⊙O的直径.
①求证:四边形EFGH为“完美四边形”.
②若EF=6,FG=8,FH是否存在一个值使四边形EFGH的面积最大?若存在,求出FH的值;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/10/62dc1d3e-ba87-48c8-96cc-7f9ff692f532.png?resizew=249)
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解答题-问答题
|
困难
(0.15)
名校
【推荐1】在
中,
为坐标原点,
在第一象限,其中内心
,其中
,
,
三点都是整数点.
(1)求直线
的解析式;
(2)
,求整点
的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17ca7ca29873225a554ddf912160fc77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/747a1f0e2e633cc054231b8c61569e60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7a3e520a16d4fdd73c4e6a4ce7be0e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2066eeb330ac1d7c3f91772fb4e9b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a9354a07397b21c33820fc2590e814.png)
您最近一年使用:0次
解答题-证明题
|
困难
(0.15)
【推荐2】如图1,已知抛物线
:
与x轴交于点
和点
,与y轴交于点C.
![](https://img.xkw.com/dksih/QBM/2022/12/18/3133704396890112/3134795570126848/STEM/34a6467ffa9543c39ad1ab5677fb92e4.png?resizew=319)
(1)求抛物线的解析式;
(2)点P在抛物线上,若
的内心恰好在y轴上,求出点P的坐标;
(3)如图2,将抛物线
向右平移一个单位长度得到抛物线
.点M,N都在抛物线
上,且分别在第四象限和第二象限,若
,求证:直线
经过一定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9553fb9beb9ed49ea5f7a0f077884d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ff2dba976c68740bbff0d1dda6a870c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72f0e78c2a6a6736652c0246e2af6177.png)
![](https://img.xkw.com/dksih/QBM/2022/12/18/3133704396890112/3134795570126848/STEM/34a6467ffa9543c39ad1ab5677fb92e4.png?resizew=319)
(1)求抛物线的解析式;
(2)点P在抛物线上,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/147de24f071e316b68fd2e78e3c84545.png)
(3)如图2,将抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed533df5a76cc6fdd3e0741440b597dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
解答题-证明题
|
困难
(0.15)
【推荐1】如图1,
内接于
,
的外角
的平分线交
于点P(点A在弧
之间),连接
.
(1)求证:
.
(2)若
,求
的半径长.
(3)如图2,在(2)的条件下,若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589c3cc1f331dbb2248b0829039df7f3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/11/a0e05c90-cc60-4f62-b74d-57f1863f35b6.png?resizew=274)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c383691e8d740830a865b12d66f7633.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c57ea5c217bafe769a7a9dfc48f221e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(3)如图2,在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fbb0503d44b7c260ffc4fcb864748f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次
解答题-证明题
|
困难
(0.15)
真题
【推荐2】已知,在
中,
,
,以
为直径的
与
交于点
,将
沿射线
平移得到
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/9/d3a961fd-0b9e-4979-a20a-f6ec9859bb15.png?resizew=528)
(1)如图1,
与
相切于点
.
①求证:
;
②求
的值;
(2)如图2,延长
与
交于点
,将
沿
折叠,点
的对称点
恰好落在射线
上.
①求证:
;
②若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/9/d3a961fd-0b9e-4979-a20a-f6ec9859bb15.png?resizew=528)
(1)如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2cc98477f5f6950404402e00d0f1414.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2719a4d6e48c4e3973e5785f5c7a9b04.png)
(2)如图2,延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f32395bce0f32cf51671acddce256bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efef9b7dcc3f2c27c47bb97ed54d72d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ad8115387158c8dda205d26968ba11.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4c6cf0f85827a8c7ed0161efdd230c9.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25d22c9df4059a154af91dd5f0f28656.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次