如图,在
中,点E,F分别在边AB,CD上,且四边形
是正方形.
;
(2)已知
的面积为20,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2330c01a4d2b5b20f106e3e48834d5c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8f7a3cf5a6acc41c4932eb8548e9e7.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
2023·广东佛山·模拟预测 查看更多[7]
2023年广东省佛山市部分名校九年级毕业生适应性学业检测数学试题(已下线)期中解答题新题速递40题专训(第十六、十七、十八章)-2022-2023学年八年级数学下册同步考点知识清单+例题讲解+课后练习(人教版)2023年湖南省怀化市中考模拟数学试题江苏省徐州市邳州市2022-2023学年八年级下学期期中数学试题江苏省南通市崇川初级中学2022-2023学年九年级下学期第二次集中作业数学试题江苏省盐城市响水县2023-2024学年八年级下学期期中数学试题江苏省扬州市江都区八校联谊2023-2024学年八年级下学期期中数学试题
更新时间:2023-03-24 15:32:07
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】在
中,
,
是
中点,
,
分别为射线
,
上一点,且满足
.
(1)如图1,若
,且
,
分别在线段
,
上,
,求线段
的长度;
(2)在(1)的条件下,如果
,
分别在射线
,
上,请问
与
还相等吗?请画图并说明理由;
(3)如图2,连接
并延长至点
,使
,过点
作
于点
,
的反向延长线与线段
的延长线交于点
,点
在
延长线上时,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.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/41ff8c8d239cc12ddc3a899e9f054aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9514b5aa8e8055c3718c5075190f2ca6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/23/3a04215b-0fbd-4799-a095-7233b9352298.png?resizew=316)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7099026716ee1821dd7d9f157dc055f5.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/41ff8c8d239cc12ddc3a899e9f054aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a309d190802e8a90b421174da5cfc72a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db7ea03277f8408fabe5b327cc34838f.png)
(2)在(1)的条件下,如果
![](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/41ff8c8d239cc12ddc3a899e9f054aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3407e83df0d037d628061f7a89b6b8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db7ea03277f8408fabe5b327cc34838f.png)
(3)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c056a26c993ab806c603f063f78da923.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c672f693a7e75a7bae4936dcb1920430.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ff8c8d239cc12ddc3a899e9f054aa9.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/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db909d68e24b4086f626b4dfa318887e.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,在
和
中,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/19/8fe15248-d05e-4322-955c-2169517834f6.png?resizew=367)
(1)如图1,当点D在
上时,
,
,求四边形
的面积;
(2)如图2,当B、C、E三点共线时,D在
上,连接
、
,F是
的中点,过点A作
,交
的延长线于点G.求证:
且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d89ba4036a5d18ec4abed44d7fd8e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eba7e2cb2e2390673b83bde332973d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eaffcd2070bfcb1955e2cab66c26c06.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/19/8fe15248-d05e-4322-955c-2169517834f6.png?resizew=367)
(1)如图1,当点D在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17fd4ce6a0ae735ba58c2c49bc2a7e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070bc896d35495237fd65576e9b6f88e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3a079cfdcca9acdacecbf08f9f78cc.png)
(2)如图2,当B、C、E三点共线时,D在
![](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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a25be9dc65f638d7f8ed1bc7fa05dea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e4183c75f18185441c0d6af2e29ddc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6cfc3169ed1ec9c6db893fff8f53e0c.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】已知点A(6,0),点P(x,y)在第一象限内,且满足x+2y=4,设△OPA的面积为S.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/11/601957d4-665c-4ba6-a083-d6902057b5c3.png?resizew=216)
(1)当点P的横坐标为3时,求△OPA的面积.
(2)用含x的式子表示S,写出x的取值范围,画出函数S的图象.
(3)若点P的横坐标是纵坐标的2倍,点Q在坐标平面内,请直接写出以O,A,P,Q为顶点的四边形是平行四边形时点Q的坐标.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/11/601957d4-665c-4ba6-a083-d6902057b5c3.png?resizew=216)
(1)当点P的横坐标为3时,求△OPA的面积.
(2)用含x的式子表示S,写出x的取值范围,画出函数S的图象.
(3)若点P的横坐标是纵坐标的2倍,点Q在坐标平面内,请直接写出以O,A,P,Q为顶点的四边形是平行四边形时点Q的坐标.
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】点P是平行四边形ABCD的对角线AC所在直线上的一个动点(点P不与点A、C重合),分别过点A、C向直线BP作垂线,垂足分别为点E、F.点O为AC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/12/c691302c-c4d5-4c2f-b0fe-bb18c58b5c8e.png?resizew=490)
(1)如图1,当点P与点O重合时,线段OE和OF的关系是_________;
(2)当点P运动到如图2所示的位置时,请在图中补全图形并通过证明判断(1)中的结论是否仍然成立?
(3)如图3,点P在线段OA的延长线上运动,当OEF=30°,AE=1,CF=3时,求线段OE的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/12/c691302c-c4d5-4c2f-b0fe-bb18c58b5c8e.png?resizew=490)
(1)如图1,当点P与点O重合时,线段OE和OF的关系是_________;
(2)当点P运动到如图2所示的位置时,请在图中补全图形并通过证明判断(1)中的结论是否仍然成立?
(3)如图3,点P在线段OA的延长线上运动,当OEF=30°,AE=1,CF=3时,求线段OE的长.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,点
,
分别在正方形
的边
,
上,且
于点
.
![](https://img.xkw.com/dksih/QBM/2020/8/29/2538331820113920/2538398242873344/STEM/ea078dedc2f14b38854bf813c237c7f1.png?resizew=121)
(1)求证:
;
(2)若四边形
的面积为12.
①正方形
的面积是________;
②当
时,求
的长.
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8290323a3da9d76a509ba5d14daabe97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/2020/8/29/2538331820113920/2538398242873344/STEM/ea078dedc2f14b38854bf813c237c7f1.png?resizew=121)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9327d1c2faee1d33db246ab52e43e4f9.png)
(2)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910936ec9fb419d51ce2f5ea817f8401.png)
①正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d48852ad433b0da21abf5be0f79260d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图1,已知正方形
,点E是
边上一点,连接
,
交
于点K,且
,连接
交
于点H.
交
的延长线于点G.
;
(2)如图2,当点E为
的中点时,求
的值;
(3)
的值是否为定值?如是,请直接写出这个定值;如不是,也请说明理由.
![](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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f0805cc7a96c866df10b667ac4851e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9a9618018d717926540d1452f76e44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaa106172cc7b3db22ebbcbc1fe84c04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe220a8c1ff10bb18014c70d3e06bbd1.png)
(2)如图2,当点E为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52dfa018b356682566777234e91969b6.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afe95d2962b7e981a1d4bfc3c6ca28c2.png)
您最近一年使用:0次