1 . 如图,在
中,
和
的角平分线
与
交于点
,且点
恰好在边
上.
为
的中点;
(2)点
为
的中点,连接
,交
于点
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f10681704c4fccfd37664eaf34391dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bab1b173dbc2cf639f0bb023c9718b06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8120f2eeb724c756b5f84a14c6df527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc07302fd45bf77fdd9eca7bc8dbea5e.png)
您最近一年使用:0次
名校
2 . 如图,在平行四边形
中,
分别平分
,交
分别于点E、F.已知平行四边形
的周长为36.
;
(2)过点E作
于点M,若
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca7b50da9fef51f37b4813746d77a33a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a3f0bff977fd039f3fc3eb948872015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92034dd2bb9480b18709d01153467f8f.png)
(2)过点E作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fab827ebee09efe2dee1d7b6a4d6884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02f5230742676675c994e84af308b94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
您最近一年使用:0次
名校
3 . 如图,在
中,
,
,点
在
的延长线上,连接
.
,当
,
时,求
的长;
(2)如图
,将线段
绕点
逆时针旋转
得到线段
,连接
,点
为
的中点,过点
作
于点
.求证:
;
(3)如图
,在第(
)问的条件下,取
的中点
,点
为线段
上的一动点,连接
,将
沿HQ翻折得
,连接
,当
最大时,直接写出
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.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/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca7e1a727ba332984ad857b3d25344d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5789230f3cd3ea88bca5f6cbf5f0259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf0db6853a914da88c714272ab5b037.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b8b3bb36445fd95c922fd8cfa7c8a9.png)
(3)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0cc73a0083ff38a66505f103ae8c2ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e60eb61e21f4f61eed1c25347cb38e5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3af0026febbebf66fa3b744e9738d17f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e4246dc99a79e5ceb62f64a7a949d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2756b7b0d6e799b16e781f234cf09574.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42357598a706021b7328cd05f716c90.png)
您最近一年使用:0次
2024-05-07更新
|
503次组卷
|
3卷引用:重庆市铜梁区巴川中学校2023-2024学年九年级上学期期末数学试题
重庆市铜梁区巴川中学校2023-2024学年九年级上学期期末数学试题重庆市南开中学2023-2024学年九年级下学期数学期中模拟试题(已下线)重难点04 圆的压轴类型归纳(8大题型+满分技巧+限时分层检测)-2024年中考数学【热点·重点·难点】专练(广东专用)
4 . 已知
是等腰直角三角形,
,
,点D在线段
上运动.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/19/25582401-7c27-4a66-9d21-bf3a90eb3c7a.jpg?resizew=455)
(1)如图1,连接
,过点C作
交
的延长线于点E,过点A作
交
于点F,若
,
,求
的长;
(2)如图2,点H是
边上一点,连接
,过点A作
交
延长线于点G,若
,将
绕点D顺时针旋转
得到线段
,
交
于点K,连接
,过点C作
交
于点N,垂足为P,求证:
;
(3)如图3,若
,连接
并将
绕点D逆时针旋转
得到线段
,连接
、
,取
中点T,点R在
上且
,连接
,直接写出当
取得最小值时
的面积.
![](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/3d89ba4036a5d18ec4abed44d7fd8e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/19/25582401-7c27-4a66-9d21-bf3a90eb3c7a.jpg?resizew=455)
(1)如图1,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef6d946ec5bc75341f7e5fe400054464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ad6f8846d4294ae3789a6ddd17af5b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd019def185df32cbc2dfe0da99c7746.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)如图2,点H是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e4fa04825ac7d071968056322d88be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de13b90ee61450dcf26f2f04b010b3b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3064b70f24e9bbcab76e0dc61274b9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddd158a566da912ce1f2abf0c0432c16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0c6c1d2e001faabec3d2f3022268e81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d02938a759f4652429b7ad53beac8b1.png)
(3)如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c118858379800688c993a8b61270b356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5d0068cc7b31aff5ffa59edc3df4ac5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb0cb4b2e0a7af501779001e4f6bb6c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23c642e4e4a1fa59c83eac9288157c00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab142c659d5434d88d7f6f5d994cfd18.png)
您最近一年使用:0次
5 . 已知
是等腰直角三角形,
,
,点D在线段
上运动.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/a2196b87-96a1-499d-9353-bd3fc96d6ecb.png?resizew=468)
(1)如图1,连接
,过点C作
交
的延长线于点E.过点A作
交
于点F,若
,
,求
的长;
(2)如图2,点H是
边上一点,连接
,过点A作
交
延长线于点G.若
,将
绕点D顺时针旋转
得到线段
,
交
于点K,连接
,过点C作
交
于点N,垂足为P.求证:
;
(3)如图3,若
,连接
并将
绕点D逆时针旋转
得到线段
,连接
、
,取
中点T,点R在
上且
,连接
,直接写出当
取得最小值时
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82da6815bc213dfd78c2f77cd7ded8ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b71053b2dba1f1d12805269920eb68d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/a2196b87-96a1-499d-9353-bd3fc96d6ecb.png?resizew=468)
(1)如图1,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c819c9a5f8d0a3f8b774d18dcd478cdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ff8c8d239cc12ddc3a899e9f054aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5795bb2a0aeebf329f21c5a5f560c386.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f48208a3f67fd590d973badcc742d4b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5a8c534025f220d95733c982e2257ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
(2)如图2,点H是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c3864197879d33d10f16a6429b0227c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de13b90ee61450dcf26f2f04b010b3b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a54b98bc71d6cff0208f189f4784322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825cb0e50c5c7e92e7ec516a78c5930e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad1b0a76a887783392268ae203ad22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11f69f26d0ddf27ab715880f818df750.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11f69f26d0ddf27ab715880f818df750.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1165830b314a0dab65ea267e82bd3f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54d1c3f53088238288520b27a31a7bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1165830b314a0dab65ea267e82bd3f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dbe6907fd5e7d143e64bd21b3d5ca6a.png)
(3)如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d527d4795ece4a5756d1cf8dba31e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7a0387fc1258f31e44a10068c0ccfd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a09b53ed83b87e40a88c096693543bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3730e2fa70360e60286cff11b37c3051.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15bdee7807edba89958c84bf4bb85f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3730e2fa70360e60286cff11b37c3051.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0db280964a1bd72b1ffcc7c92f37042d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaea35fe053357bea5d666535ad05741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7ebdc07eb2411c43494f510df7afe74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db13aadcb5388a86db1e298549759b3d.png)
您最近一年使用:0次
6 . 在学习等边三角形的过程中,小睿同学发现一个规律:在等边
中,点D是
边上任意一点,连接
,过点A的射线
交
于点E,交
于点F,当
时,则必有
.为验证此规律的正确性,小睿的思路是:先利用图,作
,再通过证全等得出结论.请根据小睿的思路完成以下作图与填空:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/6/34dcbf42-e36b-4754-a53e-f4f6aa76b10b.png?resizew=147)
(1)用直尺和圆规在图的基础上作
,
交
于点E,交
于点F.(不写作法,不下结论,只保留作图痕迹)
(2)证明:∵
为等边三角形,
∴
,______①
在
和
中,
,
∴
,
∴______③,
又∵![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
∴
______④,
∴
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41f6604f7b26f31baed2728580d618cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421291381be28da4bd16560fd383b4a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41f6604f7b26f31baed2728580d618cb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/6/34dcbf42-e36b-4754-a53e-f4f6aa76b10b.png?resizew=147)
(1)用直尺和圆规在图的基础上作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41f6604f7b26f31baed2728580d618cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)证明:∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d51faec91f1cc4fca141635945d143.png)
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad09a769a75b107390b9eeccc929f761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b50dd7603b0aa21bc529dd2e2facc1.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80342933155e709ba155151150ec24aa.png)
∴______③,
又∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c948c7abb7b150e1723d82fcf4d8e18.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421291381be28da4bd16560fd383b4a9.png)
您最近一年使用:0次
2024-03-03更新
|
74次组卷
|
3卷引用:重庆市铜梁区铜梁区巴川初级中学校2023-2024学年九年级上学期第一次月考数学试题
重庆市铜梁区铜梁区巴川初级中学校2023-2024学年九年级上学期第一次月考数学试题2023学年重庆市铜梁区巴川初级中学校上学期一阶考试九年级数学模拟试题(已下线)特色题型专练01 尺规作图-备战2024年中考数学考试易错题(江苏专用)
7 . 如图,在平行四边形
中,连接对角线
,
的角平分线交
于点E.
的角平分线,交
于点F.(保留作图痕迹,不写作法)
(2)在(1)问所作的图形中,连接
、
,求证:四边形
是平行四边形.
证明:
∵四边形
是平行四边形,
∴
,
,
①__________
∴
.
又∵
、
分别平分
、
.
∴
,
.
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65fb624bcae7cf99ce00e0712f0fd892.png)
在
和
中:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1846114289f50d3e83c127e14dd04ea2.png)
∴
,
∴
,
③__________
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3834f58a461319ff4ee34f7e98c826e.png)
∴④____________________
∵![](https://staticzujuan.xkw.com/quesimg/Upload/formula/550b15375a54ce849585b60bc42d2dd1.png)
∴
,
.
∴四边形
是平行四边形(⑤____________________)(填依据)
![](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/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)在(1)问所作的图形中,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2330c01a4d2b5b20f106e3e48834d5c0.png)
证明:
∵四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c220eadc312101e2fb89dfe920f7b30d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4db07c6ce6c8b0e96a3470c6a3491334.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5e1dc3473ec67beb52aaaba5645cacb.png)
又∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95efaa2bb4dce0f63f4a23e0f29c5aa0.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c11ddc8ae69717640df7f033cbb9bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7247142f57c83a01d0b7151990e38817.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65fb624bcae7cf99ce00e0712f0fd892.png)
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad09a769a75b107390b9eeccc929f761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13668f033d00acfc366f7e47949c4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1846114289f50d3e83c127e14dd04ea2.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52a0bbb4f071b38e625d71ef0f3de3b1.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92034dd2bb9480b18709d01153467f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d63783f365e666ace307cadcaba60fa.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3834f58a461319ff4ee34f7e98c826e.png)
∴④____________________
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/550b15375a54ce849585b60bc42d2dd1.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92034dd2bb9480b18709d01153467f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/550b15375a54ce849585b60bc42d2dd1.png)
∴四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2330c01a4d2b5b20f106e3e48834d5c0.png)
您最近一年使用:0次
2024-02-05更新
|
176次组卷
|
3卷引用:重庆市铜梁区2023-2024学年九年级上学期期末数学试题
8 . 在
中,点D是边
上一点,连接
.
平分
,
,
,
的面积为3,求
的面积;
(2)如图2,若
,点E在
上,满足
,过点C作
于点C,交
的延长线于点F,若
,求证:
;
(3)如图3,在(2)的条件下,已知
,点P,Q分别是线段
上的动点,连接
,当
的最小值是n时,直接写出线段
的长.(用含m,n的代数式表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad4c0ba3a6750537789844d0ec419d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2ddd49625097d0a78df7170be4f882e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c7038aae787bf5074438bf03af5034a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f76aae027f86e42bd67347c3d2f9ac7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b53c188dd2357ec2195d87cecd20bf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f34918a4f84fabc908c9f87df56f9330.png)
(3)如图3,在(2)的条件下,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0c26071fa1ebab92b8e750fd50d828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d2b8ba4551feee62d4e3d55d1486ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e042291e9b287e94e2d24a7993e99a6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79895b00d9d3d72995b8ee9aa54e98b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a3137705cb4170baafa66ff46eefb7a.png)
您最近一年使用:0次
2024-01-24更新
|
119次组卷
|
3卷引用:重庆市铜梁区2023-2024学年八年级上学期期末数学试题
名校
9 . 在
中,点D为
的中点,点E是
边上一点,连接
,
.小语同学想以
为对角线,构造一个平行四边形
,做了如下思考;在
的右侧作
,
边交
延长线于点F,连接
,则四边形
即为平行四边形.请你按照小语同学的思路进行作图并证明:四边形
为平行四边形.(用基本尺规作图,保留作图痕迹,不下结论)
的中点
∴ ①
在
和
中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b3f10b54b5fb518b216aa8f160aa87e.png)
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb198b095cd541d9b1db1e4c7008af6b.png)
∴ ③
又∵![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd95dc30c0344788b94289c464a3158e.png)
∴四边形
为平行四边形( ④ )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910936ec9fb419d51ce2f5ea817f8401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbd8bba2686c7b9b60b677faf9f02f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910936ec9fb419d51ce2f5ea817f8401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910936ec9fb419d51ce2f5ea817f8401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
∴ ①
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df7626240940eb340420a605e95aeee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b3f10b54b5fb518b216aa8f160aa87e.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb198b095cd541d9b1db1e4c7008af6b.png)
∴ ③
又∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd95dc30c0344788b94289c464a3158e.png)
∴四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e41003131c669f518bc8485620486fa.png)
您最近一年使用:0次
2024-01-10更新
|
240次组卷
|
2卷引用:重庆市铜梁区铜梁区虎峰初级中学校2023-2024学年八年级下学期第一次月考数学试题
名校
10 . 小量想利用平行四边形构造出一个菱形.他的思路如下:如图,在平行四边形
中,
,在
上取一点
,使得
,再作
的角平分线交
于点
,然后证明四边形
是有一组邻边相等的平行四边形来得到菱形.按以上思路完成作图与填空:
证明:用直尺和圆规,在
截取一点
,使得
,连接
,再作
的角平分线交
于点
,交
于点
,连接
.(保留作图痕迹)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/43a22cbb-de72-4cc9-bffa-54bbd3990e3c.png?resizew=175)
,
平分
,
是
上的中线,
①,
在平行四边形
中
,
在
和
中有
,
,
③,
,
四边形
是平行四边形;
④,
平行四边形
是菱形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d09a9a6f020159406608000cf93d4fa9.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/be5fc6ead6416492c231c320a5486f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.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/bedde879f99aed69d745d5ec8fe62084.png)
证明:用直尺和圆规,在
![](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/be5fc6ead6416492c231c320a5486f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.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/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/43a22cbb-de72-4cc9-bffa-54bbd3990e3c.png?resizew=175)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40818c74f43f8c4d2ce4816033005cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060705794ef87cc71dac40c57f27b1d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/000e7c9af3f278099b04f37ec5cdcfee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f3d198e76391779fa3badc848c8ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd5a1e516644950ef35eafd859b262f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7af94d2e1b70a585f9a6e3a9cac7293.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e82ae5473732118c70f487a7bfd34b89.png)
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