1 . 木匠李师傅打算在长方形木板上截一个平行四边形
,使它的一组对边在长方形木板的边缘上,另一组对边中的一条边为
,另一边过点C,且与
平行,请用圆规、无刻度的直尺帮李师傅确定
边.(不写作法,保留作图痕迹)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
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名校
2 . 写出命题“平行四边形的对边相等”的逆命题:_____ ,该逆命题是______ 命题(填“真”或“假”).
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2024-04-04更新
|
235次组卷
|
3卷引用:第01讲 证明和命题(知识解读+达标检测)-2023-2024学年七年级数学下册《知识解读·题型专练》(苏科版)
(已下线)第01讲 证明和命题(知识解读+达标检测)-2023-2024学年七年级数学下册《知识解读·题型专练》(苏科版)北京市第一六六中学2023-2024学年八年级下学期月考数学试题广东省广州市执信中学2023-2024学年八年级下学期期中数学试题
3 . 如图,
平移到
的位置,则下列说法:①
;②
;③平移的方向是点C到点E的方向;④四边形
为平行四边形.其中说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51cfa3909b5a2312eb53a235779673bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc292d7a0cb629d5397e31ff2981ec8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1452e721b37f5ca5b71522c03ec30458.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/23/3f928a82-02d2-4776-8764-6b31b03be699.png?resizew=249)
A.1个 | B.2个 | C.3个 | D.4个 |
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4 . 已知:如图,E、F分别是
的
边上的点,且
.
;
(2)若M、N分别是
的中点,连接
,试判断四边形
是怎样的四边形,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54efc4116b6cb296d55892a21e0d797f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa16498b83d2df4608888d3f4466e2cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ce1475f537b4ad21775bfaa16daa0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d99bb3ab66b8884bf23cffe1bddcb33.png)
(2)若M、N分别是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaedb59b442983718f9c992ba94b8822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f95ef139cca3d936ec2840661d2004f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9ae3c1c4c25e9277470086b34abb63d.png)
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5 . 如图,在方格纸中(小正方形的边长为1),
的三个顶点均为格点,将
沿x轴向左平移5个单位长度,根据所给的直角坐标系(O是坐标原点),解答下列问题:
(1)画出平移后的
,并直接写出点
,
,
的坐标;
(2)连接
,
,求四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/15/c56f4e08-8d13-428f-bc94-c0a6d814e7ad.png?resizew=194)
(1)画出平移后的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6024fd4532f5f981deac4582c799a6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655cc150ddc9deba2254780984d0024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20e4d2401dc178b704fe7c22fb222d67.png)
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6 . 如图,平面直角坐标系中的网格由边长为1的小正方形构成,
中,点
坐标为
,点
坐标为
,点
坐标为
.
的长;
(2)求
的度数;
(3)若以点
,
,
及点
为顶点的四边形是平行四边形,请在图中画出符合条件的平行四边形,并直接写出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/368b77f316b05fe37dca30c9a3b661f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f436117499e8ba9cb034e2704fc0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cee9e51b1dd360d8e141e7fa8f4224d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
(3)若以点
![](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/8455657dde27aabe6adb7b188e031c11.png)
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2023-07-29更新
|
60次组卷
|
2卷引用:天津市河西区北京师范大学天津附属中学2023-2024学年七年级下学期第一次月考数学试题
名校
7 . 下面是小张同学设计的“利用等腰三角形作菱形”的作图过程.
已知:等腰
,
.
求作:点C,使得四边形ABCD为菱形.
的角平分线
,交线段
于点O;
②以点O为圆心,
长为半径圆弧,交
的延长线于点C;
③连接
,所以四边形
为菱形,点C即为所求.
根据小张同学设计的作图过程.
(1)使用直尺和圆规补全图形;(保留作图痕迹)
(2)完成下面的证明.
证明:∵
,
平分
,
∴
,
,( )(填推理的依据)
∵
,
,
∴四边形
为平行四边形( )(填推理的依据)
∵
,
∴四边形
为菱形( )(填推理的依据)
已知:等腰
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
求作:点C,使得四边形ABCD为菱形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
②以点O为圆心,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
③连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d56562223fc94ffd832c03df0a07e5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
根据小张同学设计的作图过程.
(1)使用直尺和圆规补全图形;(保留作图痕迹)
(2)完成下面的证明.
证明:∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b9ea68dbddf33f0fed8f35a1fd5c90b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07d6b98ecb4793c9f063f1f6b61caa19.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b9ea68dbddf33f0fed8f35a1fd5c90b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0944865f14b13a772526c4cae4f29c99.png)
∴四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
∴四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2023-04-28更新
|
96次组卷
|
2卷引用:北京市朝阳区和平街第一中学2022~2023学年七年级下学期期中数学试卷
名校
8 . 如图,点F为正方形
的对角线
上一点(
),连接
,过F作
,交
于点E.作F关于
的对称点H,连接
交
于点P.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/30/70441b57-53d1-4fc0-8393-594ab8c56fb3.png?resizew=133)
(1)补全图形;
(2)证明:四边形
为平行四边形;
(3)写出
和
之间的数量关系,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15dfc80bf1be31ff2edf3858c5d2d4f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ef8d4792c62c0dcf35004df43a25d5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59ee613c78fa5c57eceb6dbf07baa401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/30/70441b57-53d1-4fc0-8393-594ab8c56fb3.png?resizew=133)
(1)补全图形;
(2)证明:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77f15bb171b383aa2f10459b18e636ab.png)
(3)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f116c0936eb4e4f33598951cf506038a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
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9 . 在
中,
,
分别是
,
的中点,延长
至点
,使得
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/5/01a24750-a1e4-45e9-b649-342920145ebc.png?resizew=130)
(1)求证:四边形
是平行四边形.
(2)
于点
,连接
,若
是
的中点,
,
,求
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cb27447c815a8a495ba5bf7040e265d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/5/01a24750-a1e4-45e9-b649-342920145ebc.png?resizew=130)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b312dab930cbbb9a4bb1a99f044dab73.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0972f8dc1e2a5720ea7bc57dfd9018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56512504254ab7f574a717dd6830fb33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/341a26c0df01855efb6fd69a9929fc36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f960e26e4a05a221809651d13046395.png)
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2023-04-01更新
|
235次组卷
|
3卷引用:浙江省温州市瓯海区瓯海区外国语学校2022-2023学年七年级下学期期中数学试题
浙江省温州市瓯海区瓯海区外国语学校2022-2023学年七年级下学期期中数学试题2023年浙江省温州市鹿城区九年级中考一模数学试题(已下线)专题12 图形的相似压轴题型-学易金卷:2023年中考数学一模试题分项汇编(浙江专用)
10 .
为直角三角形,
,将
沿
方向平移得到
,连接
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/4/b0571d02-314c-4bc8-b0f3-74f6f6cc4948.png?resizew=125)
(1)求
的度数;
(2)求
边
在平移过程中扫过的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/115d8d9d4e42dbd0c44f2e299a0d25a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe17ed02c1853c2f68a7169d14df70d9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/4/b0571d02-314c-4bc8-b0f3-74f6f6cc4948.png?resizew=125)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c962fe4f47732b8e6e83d17ff2b9af13.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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