1 . 如图,
与
相交于点
,
,若用“
”证明
,还需添加的条件是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/12/7cf34c29-1da0-4d19-b877-a0eb98fef4f4.png?resizew=142)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c35c43d90814396ff06336fa45e9650.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5a290f047f50481318d040c604d72f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a19c5d03c413746b2ce45730e2f7344.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/12/7cf34c29-1da0-4d19-b877-a0eb98fef4f4.png?resizew=142)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 我国纸伞的制作工艺十分巧妙.如图,伞不管是张开还是收拢,伞柄AP始终平分同一平面内两条伞骨所成的角
,且
,从而保证伞圈
能沿着伞柄滑动.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/21/5aeeba6c-1952-46d3-89cc-39587ff7b514.png?resizew=228)
(1)证明:
.
(2)若伞圈
滑动到
,用直尺和圆规作出两条伞骨
的位置.
(3)若
时,当
由正三角形变成直角三角形的过程中,伞圈
滑动的距离是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/478d37dea757c66f3ba3f73938fab9b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/21/5aeeba6c-1952-46d3-89cc-39587ff7b514.png?resizew=228)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33e7a5fa34d4f207f93effbf9ce6fe88.png)
(2)若伞圈
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d54431bbb28ebd98db5c1dc6083a75.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2949a57eaab814575234f355b3cd6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441dec590b47adc3678a291a3ec89a4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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3 . 如图,在
的正方形网格中,
的顶点都在正方形网格的格点上请你在图①和图②中分别画出一个三角形,同时满足以下两个条件:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/10/b7bba0dd-d433-4c97-a181-07bb9c1dc3ea.png?resizew=359)
(1)以点A为一个顶点,另外两个顶点也在正方形网格点上;
(2)与
全等,且不与
重合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ca9596f4b49db923a41530e1973c32e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/10/b7bba0dd-d433-4c97-a181-07bb9c1dc3ea.png?resizew=359)
(1)以点A为一个顶点,另外两个顶点也在正方形网格点上;
(2)与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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3卷引用:福建省永春县崇贤中学2022-2023学年八年级上学期12月月考数学试题
福建省永春县崇贤中学2022-2023学年八年级上学期12月月考数学试题(已下线)第06讲 SAS,ASA证全等-【暑假自学课】2023年新八年级数学暑假精品课(人教版)黑龙江省哈尔滨市虹桥初级中学2022-2023学年七年级下学期六月期末数学试题
4 . 如图,等腰直角
中,
,
,D为
中点,
,P为
上一个动点,当P点运动时,
的最小值为______ .
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/186dee1a1cf68677d143172a2a50709c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/9/45015be9-f9c9-47e5-8621-21f007284380.png?resizew=174)
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4卷引用:湖北省武汉市黄陂区盘龙城经济开发区第一中学2022-2023学年八年级上学期期末数学试卷
湖北省武汉市黄陂区盘龙城经济开发区第一中学2022-2023学年八年级上学期期末数学试卷(已下线)专题2.15 特殊三角形章末十八大题型总结(拔尖篇)-2023-2024学年八年级数学上册举一反三系列(浙教版)(已下线)专题13.10 轴对称章末十大题型总结(拔尖篇)-2023-2024学年八年级数学上册举一反三系列(人教版)(已下线)专题15.10 轴对称图形与等腰三角形章末九大题型总结(拔尖篇)-2023-2024学年八年级数学上册举一反三系列(沪科版)
5 . 如图,要测量池塘两端
,
的距离,可先在平地上取一个可以直接到达
,
两点的点
,连接
并延长
到点
,使
,连接
并延长
到点
,使
,连接
,那么量出
的长就等于
的长,这是因为
,而这个判定全等的依据是______ (填字母).
![](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/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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e12457d5b7d0f2611f4cdc173ceb784.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aa5357d8bbc8778d64cd38cff09ceb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d66193684f7dd516b33f76fcb522ea19.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/8/60972eec-f221-4887-aaba-6a719e238885.png?resizew=180)
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6 . 已知,如图,在四边形
中,
,
平分
,E为
上任意一点,连接
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd3c2130c900b186ae36406ae496b78b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/824513ba3c12cec2601b75e831e8b4de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f99d22ebe4f2b2a08791de45ef5ec9a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/7/f77454b9-588a-4a9c-9f0a-118b6b5d0ecc.png?resizew=127)
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7 . 如图,点
在同一直线上,点
和
分别在直线
的两侧,
且
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d93fd1d660adaff9d47b65a6325a057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd81adb13f5a7550b0f94f770900a613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a510a3eb906b3ef0760b0d1723d11ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f7f27111303c38eaf43bf547e460a33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da8fe8f5f8a3f17561d70652ad1172a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/7/36cc87cf-de02-4941-85f3-2447c87d5470.png?resizew=214)
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5卷引用:吉林省长春市吉林大学附属英才学校2022-2023学年八年级上学期期末考试数学试题
吉林省长春市吉林大学附属英才学校2022-2023学年八年级上学期期末考试数学试题吉林省长春市二道区第一〇八学校2022-2023学年八年级上学期9月月考数学试题(已下线)专题4.5利用三角形全等测距离-【帮课堂】2022-2023学年七年级数学下册同步精品讲义(北师大版)吉林省长春新区北湖英才学校2022-2023学年八年级上学期期末数学试题福建省福州仓山区实验中学2023-2024学年九年级下学期月考数学试题
8 . 如图,要测池塘两端A、B两点的距离,可先在平地上取一个点C,连接
并延长到D,使
,连接
并延长到E,使
,连接DE,那么量出DE的长就等于
的长,可根据______ 方法判定
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6741e5ff4a2b3bacf8ab93b2bfbcfb03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0af2c07d1d8dae879d2729dc520a38b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49d712453a1ee98c8cac2dfbb35ba609.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/3eff32d1-6eae-46b5-9f26-b7c2a59aef2f.png?resizew=136)
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2卷引用:广西壮族自治区柳州市柳南区第二十一中学2022-2023学年八年级上学期10月月考数学试题
解答题-证明题
|
较易(0.85)
|
9 . 我们把两组邻边分别相等的四边形叫做“筝形”.如图,四边形
是一个筝形,其中
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/682a7504-4b23-4d74-83fa-7625a5e12f3e.png?resizew=142)
(1)求证:
;
(2)设对角线
,
相交于点
,
,
,垂足分别是
,
.请直接写出图中的所有全等三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd95dc30c0344788b94289c464a3158e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4908fad3dc6fe1b0675c870328f043ef.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/682a7504-4b23-4d74-83fa-7625a5e12f3e.png?resizew=142)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ecb138a844ef11bb3214cff0a475c9b.png)
(2)设对角线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/178e3fa2e4de57a4c067e79be7d798e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1b4fbd9d850ac188f0f926dc5435761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
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10 . 如图,在正方形
中,
平分
交
于点
,点
是边
上一点,连接
,若
,则
的度数为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97075fe3c2a105f5d2d0a27a9f2b3410.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f34868b311f1082fb003dec7f07cdfd2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/ee3619f1-8b51-4a96-81e7-c680c9854f52.png?resizew=136)
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8卷引用:2022年内蒙古包头市中考数学第三次模拟试题