1 . 如图,在
中,
,垂足为
,点
在
上,
,垂足为
,
.
的理由;
(2)如果∠
,且
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab00e0cff0876c4183a47f1272cf9928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ae94174cadb3e1c04e55773463895c2.png)
(2)如果∠
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2832307eff7db730ed829fb9bf8b4122.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c769090b5a79d9d21f7e9b6a95468b47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/605f2976297a0deaa1602ef09d6a5afa.png)
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2 . 与
是同位角,
,则
( )
A.![]() | B.![]() | C.![]() | D.不能确定 |
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3 . 如图,,点
在
上,
平分
交
于点
,若
,请判断
与
的大小,并说明理由.
您最近一年使用:0次
2024-03-31更新
|
21次组卷
|
2卷引用:浙江省杭州市余杭区2023-2024学年七年级下学期3月月考数学试题
名校
4 . 已知长方形纸片
,点
和点
分别在边
和
上,且
,点
和点
分别是边
和
上的动点,现将点
,
,
,
分别沿
,
折叠至点
,
,
,
,若
,则
的度数为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e81132e000c11f3b24f98c54882ec5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.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/5963abe8f421bd99a2aaa94831a951e9.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff0e895fbdb6f6759a8346ad7ea7f6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb34a7abb4b6269fbbec581df20dd3c8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/31/2a3de6b3-e9e5-42ed-90ac-2025aa0b241f.png?resizew=154)
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5 . 如图,直线
相交于点
,
,若
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c4cd264c97c1f261229925cc5a6761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccb07be6fe66900e34442800a180f7da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d1668a9da97f33e2863ccf073ca6862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c543c3ddc3723fde6bbfca3ea3b921b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-03-29更新
|
86次组卷
|
3卷引用:浙江省杭州市余杭区2023-2024学年七年级下学期3月月考数学试题
名校
6 . 某中学将国家非物质文化遗产——“抖空竹”引入特色大课间,某同学“抖空竹”的一个瞬间如图示.将图①抽象成图②的数学问题:在平面内,
,
的延长线交
于点
;若
,
,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e155a5979b2c2633791cf2a98e6905eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49ffef5b03f222606683bba937060d68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1384d0a02d097ac7aa8a19e8da6f9767.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-03-29更新
|
144次组卷
|
20卷引用:浙江省金华市义乌市绣湖中学2023-2024学年七年级下学期3月学情调研数学试题
浙江省金华市义乌市绣湖中学2023-2024学年七年级下学期3月学情调研数学试题广西壮族自治区河池市都安瑶族自治县民族实验初级中学2022-2023学年七年级下学期6月月考数学试题江西省上饶市余干县瑞洪中学2023-2024学年八年级上学期月考数学试题2024年浙江省杭州市九年级中考数学三模冲刺训练试题河南省南阳市镇平县2023-2024学年七年级下学期5月月考数学试题2023年陕西省咸阳市秦都区电建学校中考数学二模试卷 (已下线)夯实基础60题必刷题专训(第五、六、七章)-2022-2023学年七年级数学下学期期中期末考点大串讲(人教版) 2023年山东省德州市夏津县中考一模数学试题2023年山东省枣庄市中考二模数学试题2023年山东省枣庄市滕州市中考二模数学试题2023年山东省日照市曲阜师范大学附属学校中考数学二模试题2023年陕西省西安市曲江第一中学中考七模数学考试2023年河南省开封市中考模拟考试数学试题湖南省衡阳市第九中学2022--2023学年七年级下学期期中数学试题陕西省西安高新第一中学2023-2024学年九年级下学期开学考试数学试题2024年河南省中考数学一模备考热身试题备战2024年江苏省扬州市中考数学模拟试题2024年山东省济南市长清区第三初级中学中考一模数学模拟练习题2023年四川省 遂宁市 安居区四川省遂宁市第六中学中考适应性考试数学模拟试题2024年河南省南阳市淅川县九年级中考一模数学试题
7 . 如图1,数学课上,老师在黑板上画出两条直线
,
,两条直线所成的角跑到黑板外面去了,老师让小明在黑板上测量出直线
,
所成的角的度数,小明在图 2 中画出测量示意图,过直线
上一点
,作
.测量
与
的夹角
就是
、
所成的角的度数.这种画图方法的数学依据是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e59fc64fe2be309ceb53b0b50c1d3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b69d40b75d582c4b8ffa2369af1d41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/28/fccdc9ff-cacd-4e4a-861e-653b7c7ab800.png?resizew=159)
A.同位角相等,两直线平行 | B.内错角相等,两直线平行 |
C.两直线平行,同位角相等 | D.两直线平行,内错角相等 |
您最近一年使用:0次
8 . 如图,点
在线段
的延长线上,下列四个结论中正确的个数是( )
①如果
,那么
;②如果
,那么
;③如果
,那么
;④如果
,那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49bf12f5d59dba0b0acad6d38600945c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
①如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/682dc163baa74e18746d3d52da6cff7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81ff41ff23e739c3377cbb49cb377a75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee8ef58be8708144272538ee427fb92c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49bf12f5d59dba0b0acad6d38600945c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/28/e08ad7f9-b123-4b03-885c-cde9178f9ecd.png?resizew=233)
A.1 | B.2 | C.3 | D.4 |
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9 . 如图,
,
,证明:
,请将说明过程填写完整.
证明:∵
,(已知)
∴
______,(____________)
∴
.(已知)
∴____________.(____________)
∴
.
∴
.(____________)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d354155f71a1736c1c9186168695edd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0deb2382068e34f668bb2b4a42346572.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/19/2efa5e25-a42a-4a05-ae13-e8f38ef024f7.png?resizew=164)
证明:∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d354155f71a1736c1c9186168695edd.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cc310194575262fb45352c2fbc19868.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0deb2382068e34f668bb2b4a42346572.png)
∴____________.(____________)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e50ce9ef89a466df68124a1dccff5663.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
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10 . 已知:如图,点
,
,
,
在同一直线上,
,
,
.求证:
(1)
.
(2)若
,
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd81adb13f5a7550b0f94f770900a613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79de59390a7059cfdea1f42ce1ffac70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/967578d2c4086aef3fda57ed4cdae5c0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/21689f68-c38d-48c0-9a1d-a9f4940efad6.png?resizew=146)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ca10806fc8c3c3efd6859f526b76900.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d777d15cd733338ecfd0ea63819f62c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4c644552971b3cd35d40ae732407baa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
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