已知△ABC与△ADE共顶点A,
,顶点B和C在直线
上(点B在点C的左侧),顶点D和E在直线
上(点D在点E的左侧),且直线
.
与
之间,判断∠BAD与
是否相等,并说明理由.
(2)如图2,顶点A在
与
之间,∠ABC的外角平分线与∠AED的角平分线交于点F,若
,求∠BFE的度数.
(3)若顶点A在直线
的下方,且顶点B、A、D不在一条直线上,∠ABC的外角平分线与∠AED的角平分线交于点F,记
,
,请探究
与
的数量关系,并直接写出结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c240781f88a6295b9d31036be90454.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/027830fc47290062692964077ee481e4.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/bef639083b709d4c98ceed9dfdc370d6.png)
(2)如图2,顶点A在
![](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/621a05c5471ea47643831189eeed3735.png)
(3)若顶点A在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/224efa375375f1ac848b0c15ee51aebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4520c9a92a7ba49a4214cf7795c9a94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
21-22七年级下·浙江衢州·期末 查看更多[4]
浙江省衢州市江山市2021-2022学年七年级下学期期末数学试题(已下线)期末难点特训(二)和平行线的性质和判定有关的压轴题-【微专题】2022-2023学年七年级数学下册常考点微专题提分精练(浙教版)(已下线)期末难点特训(四)和相交线平行线有关的压轴题-【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)(已下线)专题07 浙江省各地市七下期末试卷简答题压轴题选练【好题汇编】-备战2023-2024学年七年级数学下学期期末真题分类汇编(浙教版)
更新时间:2022-08-27 15:10:37
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相似题推荐
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【推荐1】如图1,点O为直线AB上一点,过点O作射线OC,使∠AOC=60°.将一直角三角板的直角顶点放在点O处,一边OM在射线OB上,另一边ON在直线AB的下方.
(1)将图1中的三角尺绕点O顺时针旋转至图2,使一边OM在∠BOC的内部,且恰好平分∠BOC.求∠CON的度数;
(2)将图1中的三角尺绕点O按每秒10°的速度沿顺时针方向旋转一周,在旋转的过程中,在第几秒时,直线ON恰好平分锐角∠AOC?
(3)将图1中的三角板绕点O顺时针旋转至图3,使ON在∠AOC的内部,请探究∠AOM与∠NOC之间的数量关系,并说明理由.
(1)将图1中的三角尺绕点O顺时针旋转至图2,使一边OM在∠BOC的内部,且恰好平分∠BOC.求∠CON的度数;
(2)将图1中的三角尺绕点O按每秒10°的速度沿顺时针方向旋转一周,在旋转的过程中,在第几秒时,直线ON恰好平分锐角∠AOC?
(3)将图1中的三角板绕点O顺时针旋转至图3,使ON在∠AOC的内部,请探究∠AOM与∠NOC之间的数量关系,并说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/81515f9c-7852-4352-9e7c-29b9883dbd24.png?resizew=355)
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【推荐2】已知一副三角板按如图1的方式拼接在一起,边
与直线
重合,其中
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/27/b8aa8985-4a7d-4203-87e2-2c1c52068cbe.png?resizew=581)
(1)求图1中的
的度数;
(2)如图2,三角板
固定不动,将三角板
绕着点
按顺时针方向旋转一个角度
,其中
.
①当三角板
的一边平分
时,求旋转角
的度数;
②是否存在
?若存在,求此时
的度数;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8044faecc4d5a611814a7f1e64dbf8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6f85c381bd12c6fe6667f797a07c68.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/27/b8aa8985-4a7d-4203-87e2-2c1c52068cbe.png?resizew=581)
(1)求图1中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9f91270ddbe1cf3c1362e1b95aee14.png)
(2)如图2,三角板
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf126cfed85fa9b7720ec6f7b0008dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e915c7310f3781887a1afb99dbf949.png)
①当三角板
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15886bb1365d039d8e4450cae287788d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
②是否存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3100040d12f66fa52c676d36b6b8b68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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【推荐3】【问题背景】
(1)如图1的图形我们把它称为“8字形”,请说明
;
![](https://img.xkw.com/dksih/QBM/2017/3/20/1647755697938432/1653054871166976/STEM/ff315f31e5b84878b856d967bd4710e9.png?resizew=158)
【简单应用】
(2)阅读下面的内容,并解决后面的问题:如图2, AP、CP分别平分∠BAD. ∠BCD,若∠ABC=36°,∠ADC=16°,求∠P的度数;
![](https://img.xkw.com/dksih/QBM/2017/3/20/1647755697938432/1653054871166976/STEM/3f211921bec4460c83c1f40463d0bea5.png?resizew=228)
解:∵AP、CP分别平分∠BAD. ∠BCD
∴∠1=∠2,∠3=∠4
由(1)的结论得:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c700d5e2382f9576860426ece638fcb.png)
①+②,得2∠P+∠2+∠3=∠1+∠4+∠B+∠D
∴∠P =
(∠B+∠D)=26°.
【问题探究】如图3,直线AP平分∠BAD的外角∠FAD,CP平分∠BCD的外角∠BCE,若∠ABC=36°,∠ADC=16°,请猜想
的度数,并说明理由.
![](https://img.xkw.com/dksih/QBM/2017/3/20/1647755697938432/1653054871166976/STEM/1ba81aa5f46f48a7bc9aca39dc84e740.png?resizew=219)
【拓展延伸】
① 在图4中,若设∠C=α,∠B=β,∠CAP=
∠CAB,∠CDP=
∠CDB,试问∠P与∠C、∠B之间的数量关系为:________________(用α、β表示∠P),
②在图5中,AP平分∠BAD,CP平分∠BCD的外角∠BCE,猜想∠P与∠B、∠D的关系,直接写出结论______________________
(1)如图1的图形我们把它称为“8字形”,请说明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc6436b9c2493203d008064460c3c487.png)
![](https://img.xkw.com/dksih/QBM/2017/3/20/1647755697938432/1653054871166976/STEM/ff315f31e5b84878b856d967bd4710e9.png?resizew=158)
【简单应用】
(2)阅读下面的内容,并解决后面的问题:如图2, AP、CP分别平分∠BAD. ∠BCD,若∠ABC=36°,∠ADC=16°,求∠P的度数;
![](https://img.xkw.com/dksih/QBM/2017/3/20/1647755697938432/1653054871166976/STEM/3f211921bec4460c83c1f40463d0bea5.png?resizew=228)
解:∵AP、CP分别平分∠BAD. ∠BCD
∴∠1=∠2,∠3=∠4
由(1)的结论得:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c700d5e2382f9576860426ece638fcb.png)
①+②,得2∠P+∠2+∠3=∠1+∠4+∠B+∠D
∴∠P =
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
【问题探究】如图3,直线AP平分∠BAD的外角∠FAD,CP平分∠BCD的外角∠BCE,若∠ABC=36°,∠ADC=16°,请猜想
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19768d8c55deb4973820aeab7a224e6a.png)
![](https://img.xkw.com/dksih/QBM/2017/3/20/1647755697938432/1653054871166976/STEM/1ba81aa5f46f48a7bc9aca39dc84e740.png?resizew=219)
【拓展延伸】
① 在图4中,若设∠C=α,∠B=β,∠CAP=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://img.xkw.com/dksih/QBM/2017/3/20/1647755697938432/1653054871166976/STEM/4583a1c163ee445d803df52c372a22e8.png?resizew=210)
②在图5中,AP平分∠BAD,CP平分∠BCD的外角∠BCE,猜想∠P与∠B、∠D的关系,直接写出结论______________________
![](https://img.xkw.com/dksih/QBM/2017/3/20/1647755697938432/1653054871166976/STEM/1c69a2c30f1344d9af03a57e3d0b62f9.png?resizew=202)
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【推荐1】已知O是直线
上一点,射线
位于直线
上方,
在
的左侧,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/65b6627d-8fa0-465b-8c8f-92a53ba2e372.png?resizew=379)
(1)如图1,
,
,当
平分
时,求
的度数;
(2)若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ac762a2899a58faa0d3ab44f1281fa.png)
①如图2,射线
平分
,求
与
的数量关系;
②
,射线
在直线
下方,
,
平分
,当
时,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd32a72701a25a902e4df022b36465bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/7d39091bc47dd9256d9aa12fbb036647.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/65b6627d-8fa0-465b-8c8f-92a53ba2e372.png?resizew=379)
(1)如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f94438615778d57a6363a92be3679c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f158832d4c0f7cb508a89ff13763bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fed1f57a835af4e9022e27603d12d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2460507a462453e084eaf70a7d867e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ac762a2899a58faa0d3ab44f1281fa.png)
①如图2,射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9f91270ddbe1cf3c1362e1b95aee14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e7b8a59f8d66176463f3d71f882a26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f55c6ac896ab4277fae2230a6e10b0.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f94438615778d57a6363a92be3679c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81bde0c36f8dcc5732abf521ecdf4d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4cd68cc82e90a5e2049a7ea3171b84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9ec9a0b3a5aba39f61ac1ec5084a61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00e1a79253b3ef0c4f764a6b3d19df5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/843adec8fba1741ccb81a9017cfb815f.png)
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【推荐2】如图,点O在直线AB上,
.
(1)如图①,当
的一边射线OC在直线AB上(即OC与OA重合),另一边射线OD在直线AB上方时,OF是
的平分线,则
的度数为_______.
(2)在图①的基础上,将
绕着点O顺时针方向旋转(旋转角度小于
),OE是
的平分线,OF是
的平分线,试探究
的大小.
①如图②,当
的两边射线OC、OD都在直线AB的上方时,求
的度数.
小红、小英对该问题进行了讨论:
小红:先求出
与
的和,从而求出
与
的和,就能求出
的度数.
小英:可设
为x度,用含x的代数式表示
、
的度数,也能求出
的度数.请你根据她们的讨论内容,求出
的度数.
②如图③,当
的一边射线OC在直线AB的上方,另一边射线OD在直线AB的下方时,小红和小英认为也能求出
的度数.你同意她们的看法吗?若同意,请求出
的度数;若不同意,请说明理由.
③如图④,当
的两边射线OC、OD都在直线AB的下方时,能否求出
的度数?若不能求出,请说明理由;若能求出,请直接写出
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8cc88685997c7586d1d4bf75a055433.png)
(1)如图①,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed66570f697459aba9daa2eaf9460bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9f91270ddbe1cf3c1362e1b95aee14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83b723421b10b3735be77e1c79fa1425.png)
(2)在图①的基础上,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed66570f697459aba9daa2eaf9460bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b2ccc34a8b3cf908af78bdbe804afac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fed1f57a835af4e9022e27603d12d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9f91270ddbe1cf3c1362e1b95aee14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2557547eecdc826b8282058802d217.png)
①如图②,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed66570f697459aba9daa2eaf9460bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2557547eecdc826b8282058802d217.png)
小红、小英对该问题进行了讨论:
小红:先求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fed1f57a835af4e9022e27603d12d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9f91270ddbe1cf3c1362e1b95aee14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9ec9a0b3a5aba39f61ac1ec5084a61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56dcd6bc050c5609fa70e9e41122d233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2557547eecdc826b8282058802d217.png)
小英:可设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fed1f57a835af4e9022e27603d12d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9ec9a0b3a5aba39f61ac1ec5084a61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56dcd6bc050c5609fa70e9e41122d233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2557547eecdc826b8282058802d217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2557547eecdc826b8282058802d217.png)
②如图③,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed66570f697459aba9daa2eaf9460bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2557547eecdc826b8282058802d217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2557547eecdc826b8282058802d217.png)
③如图④,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed66570f697459aba9daa2eaf9460bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2557547eecdc826b8282058802d217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2557547eecdc826b8282058802d217.png)
![](https://img.xkw.com/dksih/QBM/2021/1/20/2640092008488960/2642875119067136/STEM/cde92d33-bed6-45d7-b831-7f925d4e0118.png)
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【推荐1】已知直线
,点E,F分别在
上,O是平面内一点(不在直线
、
、
上),
平分
,射线
,交
于点H.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/29/cbde01e5-cbf8-42e5-8785-2f283d08eefb.png?resizew=405)
(1)如图①,若
,则
,
(2)如图②,若
,则
;
(3)直接写出点O在不同位置时
、
和
三个角之间满足的数量关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9b79c80cc81b5446dfac3ee97b03c03.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/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307bd991211ec79b47a4be52933bb8e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2557547eecdc826b8282058802d217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/695426a65388e272f81dacc9decf141a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/29/cbde01e5-cbf8-42e5-8785-2f283d08eefb.png?resizew=405)
(1)如图①,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e74b49c952f217fcd875c08ea68e41dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29946e87f74bb0c74beaeedd33fb69a.png)
(2)如图②,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fabdab4bd71cf6e52b6ee13135cbc945.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3f65d70275f4e3b52f855f8699734cc.png)
(3)直接写出点O在不同位置时
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c122873803fb37d6d916b1d919c08ba5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec5bf4e223aa2cce5e53d8b21d9b73e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/840272929b0460aa562be8e454859c07.png)
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【推荐2】已知直线AB//CD,P是两条直线之间一点,且AP⊥PC于P.
(1) 如图1,求证:∠BAP+∠DCP=90°;
(2)如图2,CQ平分∠PCG,AH平分∠BAP,直线AH、CQ交于Q,求∠AQC的度数;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/22/3027793f-9a02-432e-b120-57b8bb31e020.png?resizew=316)
(1) 如图1,求证:∠BAP+∠DCP=90°;
(2)如图2,CQ平分∠PCG,AH平分∠BAP,直线AH、CQ交于Q,求∠AQC的度数;
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名校
【推荐1】已知四边形![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/3bec4151-ba2a-4f59-8e42-69322dec6ede.png?resizew=449)
(1)如图1:
,
.求证:
;
(2)如图2:在(1)的条件下,取
上一点
作为顶点作直角
,使直角的两边交
于
,交
于
.则
________.(直接写出角度和)
(3)如图3:在(2)的条件下,
上存在点
,
,连接
,延长
交
延长线于
,若
、
恰好平分
、
,且
,求
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/3bec4151-ba2a-4f59-8e42-69322dec6ede.png?resizew=449)
(1)如图1:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4fd85cff10e8f192cfe0b0a8b2f4996.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
(2)如图2:在(1)的条件下,取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa70e7c9ef8b856b494d370b7d76482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b382f1d651b55e68ba9df45cc8d27fe.png)
(3)如图3:在(2)的条件下,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86053908483d07c5ea3da57b8ad7ef11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed1b418d67b301ebfd7db583aa176e28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a3137705cb4170baafa66ff46eefb7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96461af9193d5d7867ddf8fcbefcaec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca1d09859dfab140e55e3cc3e7d67d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82bf8f29e486ec388107b497520391c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c8fae532fd2d1aec759f06bf5a3a5d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0feb0b8ec2bb476a1c7bf1b600b29e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e50fb62d5dcf1077a2fe4ddd6f9f605.png)
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(0.4)
【推荐2】【基础巩固】(1)如图1,已知
,求证:
;
【尝试应用】(2)如图2,在四边形
中,
,点E是线段
上一点.
,求
的度数;
【拓展提高】(3)如图3,在四边形
中,
,点E是线段
上一点.若
平分
.
①试求出
的度数;
②已知
,点G是直线
上的一个动点,连接
并延长.
2.1若
恰好平分
,当
与四边形
中一边所在直线垂直时,
_____
;
2.2如图4,若
是
的平分线与
的延长线交于点F,与
交于点P,且
,则
______
(用含
的代数式表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46959dac6ffa1ae2c2cc1877fff7d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b272c4372b125b7025a86ea1c7e0e8.png)
【尝试应用】(2)如图2,在四边形
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ee433ebfb56b7334ba5e6aa64cbbf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d29e7c4d6216690152430b09f9cf0c2.png)
【拓展提高】(3)如图3,在四边形
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e7e98e908ab8566773ed49c1ff25db.png)
①试求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060705794ef87cc71dac40c57f27b1d2.png)
②已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5453b681b9c8b41293ba87862b9898c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
2.1若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727ad3e630a224303d6d3b8ad5c114ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d12d1752b63c6a44f6eb3e30e689d669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
2.2如图4,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb8eca20ce2c918ea4034ea15210c7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/033dfc39bd1b9b08ae9576f3074cfa89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db90c0feb35aa54464f1303be9118f37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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解答题-证明题
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(0.4)
解题方法
【推荐3】如图,以直角三角形AOC的直角顶点O为原点,以OC,OA所在直线为轴和轴建立平面直角坐标系,点A(0,a),C(b,0)满足
.
(1)a= ;b= ;直角三角形AOC的面积为 .
(2)已知坐标轴上有两动点P,Q同时出发,P点从C点出发以每秒2个单位长度的速度向点O匀速移动,Q点从O点出发以每秒1个单位长度的速度向点A匀速移动,点P到达O点整个运动随之结束.AC的中点D的坐标是(4,3),设运动时间为t秒.问:是否存在这样的t,使得△ODP与△ODQ的面积相等?若存在,请求出t的值;若不存在,请说明理由.
(3)在(2)的条件下,若∠DOC=∠DCO,点G是第二象限中一点,并且y轴平分∠GOD.点E是线段OA上一动点,连接接CE交OD于点H,当点E在线段OA上运动的过程中,探究∠GOD,∠OHC,∠ACE之间的数量关系,并证明你的结论(三角形的内角和为180).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3006ec8547607e91ac10401152db6163.png)
(1)a= ;b= ;直角三角形AOC的面积为 .
(2)已知坐标轴上有两动点P,Q同时出发,P点从C点出发以每秒2个单位长度的速度向点O匀速移动,Q点从O点出发以每秒1个单位长度的速度向点A匀速移动,点P到达O点整个运动随之结束.AC的中点D的坐标是(4,3),设运动时间为t秒.问:是否存在这样的t,使得△ODP与△ODQ的面积相等?若存在,请求出t的值;若不存在,请说明理由.
(3)在(2)的条件下,若∠DOC=∠DCO,点G是第二象限中一点,并且y轴平分∠GOD.点E是线段OA上一动点,连接接CE交OD于点H,当点E在线段OA上运动的过程中,探究∠GOD,∠OHC,∠ACE之间的数量关系,并证明你的结论(三角形的内角和为180).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/13/7b1893e1-c113-4555-9d4e-37837ce1573e.png?resizew=314)
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