如图
,直线
与直线
、
分别交于点
、
,
.
;
(2)如图
,
与
的角平分线交于点
,延长
交
于点
,点
是
上一点,且
,求证:
;
(3)如图
,在(2)的条件下,连接
,
,K是GH上一点,连接PK,作
平分
,若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d1717b5311ed602f1730e86d9322647.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2ee75a234ac05a3225e49ddd8c5065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f68e4414c9ab464bf433385c03705f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f541f7ae7c39082d202efd28805c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cb1de78a83c3a206ed3a3949e313f4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e95571ddc57113018cab89b50c12128.png)
(3)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35d58f9019097bd05037aefd5c322916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63b3456fca927e4c12484da10bf5dee9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e00216eb8b0f3b8c1e0713c98fa4dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e8b284f8445c47c51bdbf3a87923e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e0c68bc419d189584f3c3d1ec9c46c4.png)
23-24七年级上·黑龙江哈尔滨·期中 查看更多[4]
黑龙江省哈尔滨市德强学校2023-2024学年七年级上学期期中数学试题(已下线)专题02 平行线的判定与性质-【帮课堂】2023-2024学年七年级数学下册同步学与练(人教版)浙江省2023-2024学年七年级下学期期中数学试题山西省吕梁市交城县2023-2024学年七年级下学期期中数学试题
更新时间:2024-05-07 21:28:44
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解答题-问答题
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适中
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名校
【推荐1】在同一平面内已知∠AOB=160°,∠COD=90°,OE平分∠BOD,OF平分∠AOC.
![](https://img.xkw.com/dksih/QBM/2022/4/2/2949571084001280/2950218286637056/STEM/71733d33-6491-4635-b95e-dd3b9c6f2909.png?resizew=166)
(1)当∠AOC=80°,求∠EOF的度数;
(2)在做题过程中聪聪同学认为就算不知道∠AOC的度数,也能求∠EOF的度数,请你在∠AOC的度数未知的情况下,求∠EOF的度数.
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(2)在做题过程中聪聪同学认为就算不知道∠AOC的度数,也能求∠EOF的度数,请你在∠AOC的度数未知的情况下,求∠EOF的度数.
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【推荐2】如图,O是直线AB上的一点,OC为任意一条射线,OD平分∠BOC,OE平分∠AOC.
(1)指出图中∠AOD的补角
(2)若∠BOC=68°,求∠EOC的度数
(3)直接写出∠BOD与∠AOE的数量关系.
(1)指出图中∠AOD的补角
(2)若∠BOC=68°,求∠EOC的度数
(3)直接写出∠BOD与∠AOE的数量关系.
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【推荐1】如图,已知∠A=∠AGE,∠D=∠DGC,
(1)试说明AB∥CD;
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(2)若∠1+∠2=180°,且∠BEC=2∠B+60°,求∠C的度数.
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【推荐2】已知:如图,
,
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(1)若
,求
的度数;
(2)若点P在线段
的延长线上,
是
的角平分线,试说明:AF⊥AE.
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(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66ff70d6454b9822d6bfbeb1a1576e80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060705794ef87cc71dac40c57f27b1d2.png)
(2)若点P在线段
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
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【推荐2】小宇同学将一张长方形纸片ABCD按如图所示的方式折叠,EF,EG为折痕.问题:
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(1)
的度数是多少?写出解答过程;
(2)直线FA'与
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(3)试猜测么
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、
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这5个角之间有怎样的数量关系,并说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/28/d3d9bf9c-676b-443f-b82e-522fa6d1b398.png?resizew=231)
(1)
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(3)试猜测么
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8605eb8c29996c4289157303cab1cf1.png)
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【推荐3】如图1,已知直线CD//EF ,点A、B分别在直线CD与EF上.P为两平行线间一点
(1)若∠DAP= 40° , ∠FBP=70°,求∠APB的度数是多少?
(2)直接写出∠DAP, ∠FBP, ∠APB之间有什么关系?
(3)利用(2)的结论解答:
①如图2, AP1、BP1,分别平分∠DAP,∠FBP,请你写出∠P与∠P1,的数量关系,并说明理由;
②如图3, AP2、 BP2分别平分∠CAP,∠EBP,若∠APB=β,求∠AP2B (用含β的代数式表示).
(1)若∠DAP= 40° , ∠FBP=70°,求∠APB的度数是多少?
(2)直接写出∠DAP, ∠FBP, ∠APB之间有什么关系?
(3)利用(2)的结论解答:
①如图2, AP1、BP1,分别平分∠DAP,∠FBP,请你写出∠P与∠P1,的数量关系,并说明理由;
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