已知:
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/c80e49df-b546-43a3-a40f-ec5ba9fe779d.png?resizew=477)
(1)如图1,求证:
;
(2)如图2,点F在
、
之间,
平分
交
于点G,若
,求
的大小;
(3)如图3,点P、Q分别在
、
上,点M在
下方,点N在两平行线之间.
,请探究
之间的关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/c80e49df-b546-43a3-a40f-ec5ba9fe779d.png?resizew=477)
(1)如图1,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f694d54073e227089f23fdee865c75.png)
(2)如图2,点F在
![](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/b01c061dd9798b4121981a74438b9cad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac37366d2b54dc7d9a95ac6ddda5f3a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee6c399c39eefe7550bc9622053c85b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d7d9011ed82f5da6d4ae7797ca9b832.png)
(3)如图3,点P、Q分别在
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25757cd80b804669af658793ff6ddec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68cd5a58ebe895d31125938b25f02bcd.png)
21-22七年级下·湖北武汉·期中 查看更多[3]
湖北省武汉市东湖高新区2021-2022学年七年级下学期期中数学试卷湖北省武汉市东湖高新区2021-2022学年七年级下学期期中数学试题(已下线)难点特训(一)和平行线有关的压轴大题-【微专题】2022-2023学年七年级数学下册常考点微专题提分精练(人教版)
更新时间:2022-07-07 12:42:09
|
相似题推荐
解答题-问答题
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【推荐1】如图,已知直线
交直线l分别于点A,B,
,
,
平分
交
于点C,过点B作
于点D.将
绕点C按顺时针方向以每秒2度的速度旋转得到
,同时
绕点A按逆时针方向以每秒4度的速度旋转得到
,旋转时间为t秒,当
时首次落在
的延长线上时,两个三角形都停止转动.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/16/fe9cf4c9-59f4-4b25-837f-98ead65d00b3.png?resizew=218)
(1)比较大小:
__________
.(填“>”或“<”或“=”)
(2)若直线l平分
时,求
的度数.
(3)在旋转过程中,是否存在某一时刻,使得
与
的某一边平行?若存在,求旋转时间t的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55752dae1c84c3a0d11e21fd4931f0cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/947aed0181a8c0bd81c6ebeba8d1ddc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7552443cbbf87b66ac797bb8e4a9fec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df92344b00e2aa8e7f0d1fa997b9dd04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70734a8e672376bb0bd1522e229f86a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b5fe0407c1ce3ca9022d249675449c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1967c5e4f7d02ab1dd9d76d7c9766062.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/16/fe9cf4c9-59f4-4b25-837f-98ead65d00b3.png?resizew=218)
(1)比较大小:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b28f28ced0531d1df34fcf04c6c67f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
(2)若直线l平分
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e56a9ac542c482dab503e284fdaff2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25d56c4a4fb9846ec41bf662fbd76f0d.png)
(3)在旋转过程中,是否存在某一时刻,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e539f26ed5e0b20ff7220559324869a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1967c5e4f7d02ab1dd9d76d7c9766062.png)
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名校
【推荐2】如图1,点O为直线
上一点,将两个含
角的三角板
和三角板
如图摆放,使三角板的一条直角边
、
在直线
上,其中
.
(1)将图1中的三角板
绕点O按逆时针方向旋转至图2的位置,使得边
在
的内部且平分
,求旋转角
?
(2)三角板
在绕点O按逆时针方向旋转时,若
在
的内部.试探究
与
之间满足什么等量关系,并说明理由;
(3)如图3,将图1中的三角板
绕点O以每秒
的速度按顺时针方向旋转,同时将三角板
绕点O以每秒
的速度按逆时针方向旋转,将射线
绕点O以每秒
的速度沿逆时针方向旋转,旋转后的射线
记为
,射线
平分
,射线
平分
,当射线
、
重合时,射线
改为绕点O以原速按顺时针方向旋转,在
与
第二次相遇前,当
时,求出旋转时间t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1eb76f88cb973c220cffa1c9c0721a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6c71a0da6a878a5b12bf8a8e784645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9c5f2087f52e3c75d401b3d71a1871e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/12/caf4344c-5026-4de4-b934-d223a8abf818.png?resizew=676)
(1)将图1中的三角板
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6c71a0da6a878a5b12bf8a8e784645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27935c1ef4df2d52ac697678a3c8f39d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27935c1ef4df2d52ac697678a3c8f39d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd5cfc1134a08462e38256529685b9.png)
(2)三角板
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6c71a0da6a878a5b12bf8a8e784645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27935c1ef4df2d52ac697678a3c8f39d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9d0817bc921185f4fa539e9d0b3d460.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1673f7ca24155d29f43e998356f19072.png)
(3)如图3,将图1中的三角板
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1eb76f88cb973c220cffa1c9c0721a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1653dd6d530c2e15ef1f073760ae5ad7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6c71a0da6a878a5b12bf8a8e784645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/654c79a470d5af5e0a34fd9233da5118.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/741a44528782580d24249e8075b8cd9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27935c1ef4df2d52ac697678a3c8f39d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10aa98b163ade82dcadbe8dd3b73e42e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d188537a7863d5ef57f077daa1d01cee.png)
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解答题-证明题
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【推荐1】已知:直线EF分别交直线AB,CD于点G,H,且
,
;
(2)如图2,点M,N分别在射线GE,HF上,点P,Q分别在射线CA,HC上,连接MP,NQ,且
,分别延长MP,NQ交于点K,求证:
;
(3)如图3,在(2)的条件下,连接KH,KH平分
,且HE平分
,若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6ff3d44da99d5841025133bada10e48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
(2)如图2,点M,N分别在射线GE,HF上,点P,Q分别在射线CA,HC上,连接MP,NQ,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4eaa7bad3cd00418e95aa2c78ae7f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d31e713f9b76264946f017625edee4b2.png)
(3)如图3,在(2)的条件下,连接KH,KH平分
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74e5014645768575aac2578f228f8401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb34a7abb4b6269fbbec581df20dd3c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec75d1304db20b8b6f8f0dade9f2b83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9015272ea1b7d9179bf3a1f5e3bd089.png)
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【推荐2】
中,
,点D是
边上的一个动点,连接
并延长,过点B作
交
延长线于点F.
(1)如图1,若
平分
,
,求
的值;
(2)如图2,M是
延长线上一点,连接
,当
平分
时,试探究
之间的数量关系并说明理由;
(3)如图3,连接
,
①求证:
;
②
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/149d217efaf5090696904003ec06393a.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/5b9d0c688e55286443c9974797fc647f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/4/a55faa31-03c5-48d0-a7d0-f8f008f07be6.png?resizew=451)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
(2)如图2,M是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2319a01218514917e446dfc807a625ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0023e53eafba27ad50f9a9d3a4207d70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c74a9b58793b1b146b35784994b2223f.png)
(3)如图3,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d653fbebdc18f412b75454425a07de5d.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e4e41799d6f21562586fdb575586920.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4436bdec3b5008997b79658102a66576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
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【推荐1】如图1,已如直线
∥
,且
与
、
分别交于A、B两点,
与
、
分别交于C、D两点,记∠ACP=∠1,∠BDP=∠2,∠CPD=∠3,点P在线段AB上.
(1)若∠1=25°,∠2=33°,则∠3=__________;
(2)猜想∠1,∠2,∠3之间的相等关系,并说明理由;
(3)如图2,点在点B的南偏东23°方向,在点C的西南方向,利用(2)的结论,可知∠BAC=__________;
(4)点P在直线
上且在A、B两点外侧运动时,其它条件不变,请直接写出∠1,∠2,∠3之间的相等关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f2813ee8f26cca880b6427f5f545d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
(1)若∠1=25°,∠2=33°,则∠3=__________;
(2)猜想∠1,∠2,∠3之间的相等关系,并说明理由;
(3)如图2,点在点B的南偏东23°方向,在点C的西南方向,利用(2)的结论,可知∠BAC=__________;
(4)点P在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://img.xkw.com/dksih/QBM/2019/8/14/2268457027215360/2268581310046208/STEM/c5603744ec604e608b2981ad9712d4bb.png?resizew=584)
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【推荐2】已知 AB∥CD,点 M、N 分别是 AB、CD 上两点,点 G 在 AB、CD 之间,连接 MG、NG.
(2)如图 2,若点 P 是 CD 下方一点,MG 平分∠BMP,ND 平分∠GNP,已知∠BMG=40°,求∠MGN+∠MPN的度数;
(3)如图 3,若点 E 是 AB 上方一点,连接 EM、EN,且 GM 的延长线 MF 平分∠AME,NE 平分∠CNG,2∠MEN+∠MGN=102°,求∠AME 的度数.(直接写出结果)
(2)如图 2,若点 P 是 CD 下方一点,MG 平分∠BMP,ND 平分∠GNP,已知∠BMG=40°,求∠MGN+∠MPN的度数;
(3)如图 3,若点 E 是 AB 上方一点,连接 EM、EN,且 GM 的延长线 MF 平分∠AME,NE 平分∠CNG,2∠MEN+∠MGN=102°,求∠AME 的度数.(直接写出结果)
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【推荐1】如图,在平面直角坐标系
中,点
,且满足
点从
点出发沿
轴正方向以每秒
个单位长度的速度匀速移动,
点从
点出发沿
轴负方向以每秒
个单位长度的速度匀速移动.
![](https://img.xkw.com/dksih/QBM/2022/12/2/3121769989349376/3126531052625920/STEM/a23b39e63d334b85bae2cd6f6b093b5b.png?resizew=458)
(1)求点B的坐标及直线
和
的位置关系;
(2)当P、Q分别在线段
,
上时,连接
,使
,求出点
的坐标;
(3)在P、Q的运动过程中,当
时,请探究
和
的数量关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0648614bc490407d0b079ae3117cae87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea62eba6e17652f31bc64323b1e603ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://img.xkw.com/dksih/QBM/2022/12/2/3121769989349376/3126531052625920/STEM/a23b39e63d334b85bae2cd6f6b093b5b.png?resizew=458)
(1)求点B的坐标及直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07e37b122a7273e1251ea3860e74c896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
(2)当P、Q分别在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07e37b122a7273e1251ea3860e74c896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6967ebd791092c62b4ef97924d91883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b558d3b6177b40d474eb3a036a0e5fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8082195c04121c20a79edfc965a977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)在P、Q的运动过程中,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dd8d59cb09fdeb325c3aac3522ab10c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93c3509f3ade93b697d3ccd055d345e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5af84f29bce5daf53b8e7ddbe15ca980.png)
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