如图,
,
是
的直径,
交
于D,
于M点.
求证:
与
相切.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba870ac7e456d8daa098c9d52aeccc2c.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/9/03044a0f-dc51-4aae-9138-875c1833990a.png?resizew=150)
19-20九年级上·湖北襄阳·期中 查看更多[5]
湖北省襄阳市樊城区太平店镇青泥湾中学2019-2020学年九年级上学期期中数学试题福建省福州市闽清县2019-2020学年九年级上学期期中数学试题云南省红河哈尼族彝族自治州石屏县2021-2022学年九年级上学期期末数学试题(已下线)专题03 圆(十四大题型)-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(山东专用)(已下线)专题04 圆的辅助线和辅助圆(九大题型)-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(山东专用)
更新时间:2023-10-30 22:39:41
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相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,直线
分别与直线
交于点B,F,且
.
的角平分线
交直线
于点E,
的角平分线
交直线
于点C.
(1)请判断直线
与
的位置关系,并说明理由.
(2)求证:
.
(3)若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7c35ec6b55f83d3e4aa1db4ce4d689f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d786ee723231d4ca87eb9d011a378b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751ce5948476aaa823ff0fa58c505519.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/11/d65f4ee2-ab5f-42cb-b367-f9512979cc6f.png?resizew=227)
(1)请判断直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69ee4efe3a7e48a8ea0059228947b8f9.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80af66e266d26cba4e7090104434978b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb3de20ba8bda63c650ef571be155702.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】尺规作图(保留作图痕迹,不写作法)如图,C是
的边
上一点
(1)过C点作直线
.
(2)请说明作图的依据.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/21/74edce4a-233e-41bf-ac48-b3076df190d2.png?resizew=125)
(1)过C点作直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/180f754ae5353974ad681631f3cfe745.png)
(2)请说明作图的依据.
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解答题-证明题
|
适中
(0.65)
【推荐1】如图,有如下三个论断:①AD∥BC,②∠A=∠C,③AB//CD
⑴若从这三个论断中选择两个作为条件,余下的一个作为结论,构成一个真命题,试用“如果…那么…”的形式出来.
⑵请你对上述真命题中进行证明.
已知:
求证:
证明:
⑴若从这三个论断中选择两个作为条件,余下的一个作为结论,构成一个真命题,试用“如果…那么…”的形式出来.
⑵请你对上述真命题中进行证明.
已知:
求证:
证明:
![](https://img.xkw.com/dksih/QBM/2019/6/3/2217541718827008/2218829320290304/STEM/456a5e3ffb194487ade418e943c2181a.png?resizew=153)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在平行四边形
中,
相交于O,
交
于E点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/68bd93a9-151e-4dd7-80d1-e7822e386039.png?resizew=144)
(1)求证:
平分
;
(2)若平行四边形
的周长为20,求
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d0b0b7d07ac1aebab6b6f1e8c6acdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b836a0f9c491f85767e8f6695576fd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/68bd93a9-151e-4dd7-80d1-e7822e386039.png?resizew=144)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060705794ef87cc71dac40c57f27b1d2.png)
(2)若平行四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.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,
中,
,点
在
上,以
为直径的⊙O与
相交于点
,与
相交于点
,连接
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/4/22/2963653676826624/2964544715202560/STEM/f240e5df-54d9-4b69-9672-f03e9fb1821f.png?resizew=242)
(1)求证:
是⊙O的切线;
(2)若
,
,求⊙O的半径.
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c05c8fe48c53078d7ee6b190a5fa761.png)
![](https://img.xkw.com/dksih/QBM/2022/4/22/2963653676826624/2964544715202560/STEM/f240e5df-54d9-4b69-9672-f03e9fb1821f.png?resizew=242)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】图,正六边形ABCDEF内接于
,
的半径为6
![](https://img.xkw.com/dksih/QBM/2022/4/28/2973739566030848/2977662429609984/STEM/cd98d592-7c4b-49d7-ae68-98fb906249d8.png?resizew=141)
(1)求正六边形ABCDEF的边心距;
(2)过F作
交BA的延长线于点G,求证:FG是
的切线;
(3)若点M是
中点,连接MA,求弓形MA的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/2022/4/28/2973739566030848/2977662429609984/STEM/cd98d592-7c4b-49d7-ae68-98fb906249d8.png?resizew=141)
(1)求正六边形ABCDEF的边心距;
(2)过F作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaa106172cc7b3db22ebbcbc1fe84c04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(3)若点M是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.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,点B在⊙O上,分别根据下列条件,判断直线AB与⊙O是否相切:
(1)OB=5,AB=12,OA=13;
(2)∠O=60°,
.
(1)OB=5,AB=12,OA=13;
(2)∠O=60°,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44026c79504b216f864bf8105d1cf223.png)
![](https://img.xkw.com/dksih/QBM/2019/2/22/2145979960336384/2146926959198208/STEM/794f86a5fdbe4070ae4925d44909ff5f.png?resizew=122)
您最近一年使用:0次