1 . 如图,在
中,
,
为
上一点(不与点
,
重合).在
上找一点
,在
上找一点
,使得
与
全等,以下是甲,乙两位同学的作法.
对于甲、乙两人的作法,下列判断正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ffc5fb090753d992c22368d8fb318a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/27/82dbac4a-f64a-43b7-b6d8-ad3cc749de58.png?resizew=96)
甲 | 乙 |
连接![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]()
| 过点![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]()
|
A.两人都正确 | B.甲正确,乙错误 |
C.甲错误,乙正确 | D.两人都错误 |
您最近一年使用:0次
2 . 如图,点
在
内部,点
与点
关于
对称,点
与点
关于
对称.甲、乙两位同学各给出了自己的说法:甲:若
,则
是等边三角形;乙:若
,则
.对于两位同学的说法,下列判定正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6131160eaee962470abc7771df265c6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc51601b6c84e2ffade0e91c9feaa970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8c84a56823287fa2b878302cff66fcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aefee236ce95b71927b9048409c5c68.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/6/f0e4b685-d0e5-4b79-a272-8a50359cdb32.jpg?resizew=146)
A.甲正确 | B.乙正确 | C.甲、乙都正确 | D.甲、乙都错误 |
您最近一年使用:0次
3 . 【问题原型】如图,在
中,对角线
的垂直平分线
交
于点F,交
于点E,交
于点O,连接
,
.求证:四边形
是菱形.
【甲同学的证法】证明:
垂直平分![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
,(第一步)
(第二步)
四边形
是平行四边形(第三步)
又
(第四步)
∴四边形
是菱形(第五步)
【老师评析】甲同学想先利用对角线互相平分证明四边形
是平行四边形,再利用对角线互相垂直证明它是菱形,可惜有一步错了.
【挑错改错】
(1)甲同学的证明过程在第______步出现了错误;
(2)请你根据甲同学的证明思路写出此题正确的证明过程;
(3)直接写出当
中的
______时,四边形
是正方形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910936ec9fb419d51ce2f5ea817f8401.png)
【甲同学的证法】证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/173f7d26d069c0f16a0f6fcb517aa28c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb7475a34bbc1cd1e1b468056d087828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed9e9efc81c91390a1c25647f5bf8750.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910936ec9fb419d51ce2f5ea817f8401.png)
又
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bdbad69a82cc225f143e384c0f25de5.png)
∴四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910936ec9fb419d51ce2f5ea817f8401.png)
【老师评析】甲同学想先利用对角线互相平分证明四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910936ec9fb419d51ce2f5ea817f8401.png)
【挑错改错】
(1)甲同学的证明过程在第______步出现了错误;
(2)请你根据甲同学的证明思路写出此题正确的证明过程;
(3)直接写出当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41db498f025052df2dbb1e50ab672675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910936ec9fb419d51ce2f5ea817f8401.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/15/1db47677-5ba6-4400-b7ed-12a6c3d6a79f.jpg?resizew=168)
您最近一年使用:0次
4 . 如图,四边形
是一张平行四边形纸片,张老师要求学生利用所学知识作出一个菱形.甲、乙两位同学的作法如下:
甲:如图2,分别作
与
的平分线
、
,分别交
于点
,交
于点
,则四边形
是菱形.
乙:如图1,连接
,作
的中垂线交
、
于点
、
,则四边形
是菱形.
则关于甲、乙两人的作法,下列判断正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
甲:如图2,分别作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
乙:如图1,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910936ec9fb419d51ce2f5ea817f8401.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/12/1e08d4d4-e653-4254-9974-e9343c33346a.png?resizew=528)
则关于甲、乙两人的作法,下列判断正确的是( )
A.甲、乙均正确 | B.甲、乙均错误 | C.仅甲正确 | D.仅乙正确 |
您最近一年使用:0次
5 . 如图,在四边形ABCD中,
,
,对角线AC,BD相交于点O,下列结论中:
①
;②AC垂直平分BD;③AC平分
,
;④BD平分
,
;⑤四边形ABCD的面积
.正确的是______ .(填写所有正确结论的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a651eb577dbada1f29590e558d6f9fa2.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eb34d917a073024625616e4edf22016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727ad3e630a224303d6d3b8ad5c114ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/431c8bb7b1f97d9cba9e0b4266975204.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/8/c645c2dd-5256-41c4-8282-c2ed1abdde6b.png?resizew=117)
您最近一年使用:0次
2021-11-17更新
|
133次组卷
|
2卷引用:滚动练习(二)[范围13.1~13.2]
6 . 如图,已知
的内部有两点C,D.
(1)以点O为圆心,以适当长为半径作弧,交
于点E,交
于点F;
(2)分别以E,F为圆心,以大于
的长为半径作弧,两弧在
的内部相交于点G;
(3)作射线
;
(4)连接
,分别以C,D为圆心,以大于
的长为半径作弧,两弧相交于M,N两点;
(5)作直线
,交
于点P.
根据以上信息,甲、乙两个同学分别写出了一个结论:甲:点P到
的距离相等;乙:点P到点C,D的距离相等.其中结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/8/2ccc3aa4-f0f4-4650-a040-583122a7e92c.png?resizew=179)
(1)以点O为圆心,以适当长为半径作弧,交
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
(2)分别以E,F为圆心,以大于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52d092504d3c33c48be43f23b788efd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
(3)作射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307bd991211ec79b47a4be52933bb8e7.png)
(4)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b840be5852709e18ea985954545e78d.png)
(5)作直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307bd991211ec79b47a4be52933bb8e7.png)
根据以上信息,甲、乙两个同学分别写出了一个结论:甲:点P到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d071d008cdc313f6ed16a602f8a9669.png)
A.甲同学 | B.乙同学 | C.甲、乙两同学 | D.甲、乙两同学都错误 |
您最近一年使用:0次
7 . 如图,在
中,
(1)作
和
的垂直平分线交于点
;
(2)以点
为圆心,
长为半径作圆;
(3)
分别与
和
的垂直平分线交于点
,
;
(4)连接
,
,
,其中
与
交于点
.
根据以上作图过程及所作图形,下列四个结论中,
①
;②
;③点
是
的外心;④点
是
的内心.
所有正确结论的序号是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/1/e89932d2-b3c9-4c07-b3e8-50b7622bfa90.png?resizew=215)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(1)作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(2)以点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
(3)
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(4)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
根据以上作图过程及所作图形,下列四个结论中,
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c7bdd04797cb55ed01853f38cdd8c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfae2b7bfaefb0fbda05d137156a745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
所有正确结论的序号是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/1/e89932d2-b3c9-4c07-b3e8-50b7622bfa90.png?resizew=215)
A.①②③④ | B.①②③ | C.①③ | D.①③④ |
您最近一年使用:0次
2021-08-25更新
|
191次组卷
|
2卷引用:天津市五十中学2022-2023学年九年级上学期数学期末练习
8 . 如图,在
中,
,P为
上一点(不与点B,C重合).在
上找一点M,在
上找一点N,使得
与
全等,以下是甲、乙两位同学的作法.
甲:连接
,作线段
的垂直平分线,分别交
,
于M,N两点,则M,N两点即为所求.
乙:过点P作
,交
于点M,过点P作
,交
于点N,则M,N两点即为所求.
对于甲、乙两人的作法,下列判断正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ffc5fb090753d992c22368d8fb318a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
甲:连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
乙:过点P作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a8f0e72758db1d4e01c359fadf5c6a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b3cd3fc7f78d5aacf6ab13a4179b978.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
对于甲、乙两人的作法,下列判断正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/13/899d996f-63ec-4fa7-98a4-4aa619456976.png?resizew=147)
A.两人都正确 | B.甲正确,乙错误 |
C.甲错误,乙正确 | D.两人都错误 |
您最近一年使用:0次
9 . 下面是某同学学习完“特殊的平行四边形”后对某一道试题的证明:
试题:如图,在平行四边形
中,对角线
的垂直平分线
交
于点
,交
于点
,交
于点
.求证:四边形
是菱形.
证明:
是
的垂直平分线,
,
,
四边形
是平行四边形.![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82e415812cca9545611c0faa0c01b1c.png)
,
平行四边形
是菱形.⑤
(1)该同学的证明过程在第___步出现了错误;
(2)按照该同学的证明过程,步骤③的依据是___;步骤⑤的依据是___;
(3)写出此题的正确解答过程.
试题:如图,在平行四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910936ec9fb419d51ce2f5ea817f8401.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/15/12e25b38-8d75-4b0e-aadd-ca0334227a61.png?resizew=248)
证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/173f7d26d069c0f16a0f6fcb517aa28c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ab73c79957619fa737a0af0b746b2e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751428215fe07b49c516ab9794eeaf7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910936ec9fb419d51ce2f5ea817f8401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82e415812cca9545611c0faa0c01b1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218bec0fef9c62935ed473a07deaf695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910936ec9fb419d51ce2f5ea817f8401.png)
(1)该同学的证明过程在第___步出现了错误;
(2)按照该同学的证明过程,步骤③的依据是___;步骤⑤的依据是___;
(3)写出此题的正确解答过程.
您最近一年使用:0次
真题
名校
10 . 如图,在
中,
,
的垂直平分线分别交
、
于点
、
,
,
为
的外接圆,过点
作
的切线
交
于点
,则下列结论正确的是______ .(写出所有正确结论的序号)
①
;②
;③若
,则
的长为
;④
;⑤若
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3032820a0d2d50d9143e7923f5936ddf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfa1a2af7e38d33634c462300df381f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2291de85a2a29ff360a4515cce99c804.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3a9f06651a6efea78d5ff1217e24b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d03239fcfb349ff3b79e716783cc82f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c44512cb86bcf48c6d21357f45b533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c28d3c7f9738ee883e1afbdbda77e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e1414bbeccf1676eec1c5302e4020e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6a028fd5b281ef168702a803baca6e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21241bb77302dd2fc46d9d572432a0ba.png)
![](https://img.xkw.com/dksih/QBM/2021/6/21/2747644876251136/2747889561387008/STEM/f59ccecc-4463-4e21-87da-e57bede21256.png?resizew=252)
您最近一年使用:0次
2021-06-21更新
|
781次组卷
|
4卷引用:专题17 圆的有关概念、性质及计算-学易金卷:三年(2021-2023)中考数学真题分项汇编(湖南专用)
(已下线)专题17 圆的有关概念、性质及计算-学易金卷:三年(2021-2023)中考数学真题分项汇编(湖南专用)湖南省岳阳市2021年中考数学真题四川省遂宁市船山区遂宁市第二中学校2021-2022学年九年级下学期期中数学试题(已下线)2022年四川省泸州市中考数学真题变式题16-20题