如图,在
的边
上取一点
,以
为圆心,
为半径画圆,
与边
相切于点
,
.
是
的切线;
(2)若
,
,求
的半径.
![](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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56ee81929c987732fcb379802eeef7a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e071479287e774f7f0990b1a649658f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
更新时间:2024-05-26 10:48:12
|
相似题推荐
解答题-作图题
|
适中
(0.65)
【推荐1】如图,直角梯形
中,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/11/c9def2a5-c63b-4837-a929-bd1129f6eb19.png?resizew=95)
(1)尺规作出以
为直径的圆
(保留作图痕迹,不写作法);
(2)判断
与
的位置关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41aba1711910c6f533cc94319104f4fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b65065ec3a0cb4b050989165c003d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96f0e183dc8133ad2639368cf9436463.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/11/c9def2a5-c63b-4837-a929-bd1129f6eb19.png?resizew=95)
(1)尺规作出以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,在
中,
,
.将
绕点
逆时针旋转
,得到
,连接
.
![](https://img.xkw.com/dksih/QBM/2021/5/12/2719542574989312/2791713603575808/STEM/67e9c9a7-1698-442a-9885-cc3a1752bdec.png?resizew=151)
求:(1)
的长.
(2)
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4957406b21df59fdf7fa184752287b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e856c15c61d7cb6ebd8daef542a4e7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://img.xkw.com/dksih/QBM/2021/5/12/2719542574989312/2791713603575808/STEM/67e9c9a7-1698-442a-9885-cc3a1752bdec.png?resizew=151)
求:(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e470b9b1ab6b8db7d19dc1e48ad6f09b.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图1,AB是⊙O的直径,C,D是⊙O上的点,连接CB,CD,延长CA,BD交于点E,∠BDC=2∠ABE.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/24/522035d5-6aab-471d-b022-d24b63bde88c.png?resizew=321)
(1)求证:AE=AB;
(2)如图2,过点D作⊙O的切线交AE于点F,若DF=
,CD=
,求EF长.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/24/522035d5-6aab-471d-b022-d24b63bde88c.png?resizew=321)
(1)求证:AE=AB;
(2)如图2,过点D作⊙O的切线交AE于点F,若DF=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a7b702ada1dd80123e4041271d521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5294d690e81bbc5c4898c97c538953f0.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,已知
的直径为
,点
在圆周上(异于
,
),
.
![](https://img.xkw.com/dksih/QBM/2021/5/22/2726499348627456/2729571339526144/STEM/41660648-6269-4699-b894-6ba5292485a1.png?resizew=187)
(1)若
,
,求
的长;
(2)若
是
的平分线,求证:直线
是
的切线.
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://img.xkw.com/dksih/QBM/2021/5/22/2726499348627456/2729571339526144/STEM/41660648-6269-4699-b894-6ba5292485a1.png?resizew=187)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4189a0821a0ffab9dc171ecd279ba442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,⊙O的直径
,
,
,
是线段
的中点.
![](https://img.xkw.com/dksih/QBM/2021/1/22/2641626565500928/2665203443589120/STEM/c13f8bc8-a6a5-4af5-b515-d0794969b7d8.png)
(1)试判断点
与⊙O的位置关系,并说明理由;
(2)过点
作
,垂足为点
,求证:直线
是⊙O的切线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c88add3ceb3eb4a2bbb457fcc1bc0ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/185ca6f97e41ecf7706d7e8c8d1c8059.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e344a9a5bcf7b16fc29080f42852d428.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2021/1/22/2641626565500928/2665203443589120/STEM/c13f8bc8-a6a5-4af5-b515-d0794969b7d8.png)
(1)试判断点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9a7e5bb4d69c439f29caf2be8b5e985.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-证明题
|
适中
(0.65)
【推荐2】如图,
是
的直径,点C,D在圆上,
,过点C作
交
的延长线于点E.
(1)求证:
是
的切线;
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b858a46595a6568a483566ba2d75fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/497846628a41a9bc750a645e045afb47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/9862709c-f5be-4fa1-a235-29a985af220b.png?resizew=179)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f26ad70d2b3aac8604834d57dfc59bb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5362227d4f7d22791604fa66a3385e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在
中,
,点
是边
上一点,以
为直径的
与
交于点
,连接
并延长交
的延长线于点
,且
.
(1)求证:
为
的切线;
(2)若
,
,求
的半径的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7277733875645851ba19f488fc21415d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/14/462e9a80-3835-4ce9-9fc7-0f0f53d53e02.png?resizew=130)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3362a45b72536c714c5107b0ae94f1c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/734f6e7783b0e104fc06b01f77af990f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,方格纸中每个小正方形的边长均为1.线段AB的两个端点在小正方形的顶点上.
(1)在图中画一个以AB为腰的等腰三角形△ABC点C在小正方形的顶点上,且tan∠B=3;
(2)在图中画一个以AB为底的等腰三角形△ABD点D在小正方形的顶点上,且△ABD是锐角三角形.连接CD,请直接写出线段CD的长.
(1)在图中画一个以AB为腰的等腰三角形△ABC点C在小正方形的顶点上,且tan∠B=3;
(2)在图中画一个以AB为底的等腰三角形△ABD点D在小正方形的顶点上,且△ABD是锐角三角形.连接CD,请直接写出线段CD的长.
![](https://img.xkw.com/dksih/QBM/2019/6/25/2233052922126336/2233246339121152/STEM/0916cc23b23a4fdd961dd38a1a6cbfde.png?resizew=222)
您最近一年使用:0次