如图,菱形
的对角线
,
相交于点O,E是
的中点,点F,G在
上,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/11/2973631c-77ea-495c-bd36-e3a5740be439.png?resizew=199)
(1)求证:四边形
是矩形;
(2)若
,
,求菱形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab00e0cff0876c4183a47f1272cf9928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b943f28a579221ff710c5fd323714ead.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/11/2973631c-77ea-495c-bd36-e3a5740be439.png?resizew=199)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b670c6d27ce68f17ac12c4efa1933db1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f26ad70d2b3aac8604834d57dfc59bb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/613dedf2d90e58591b7ac4a250ac7b5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
更新时间:2023-05-08 14:28:47
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】(1)为了证明勾股定理,李明将两个全等的直角三角形按如图1所示摆放,使点
、
、
在同一条直线上,如图1,请利用此图证明勾股定理;
(2)如图2,
中,
,
,
,若点
从点
出发,以每秒
的速度沿折线
运动,设运动时间为
秒
,若点
在
的平分线上,求此时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1cd4a1c8087ef697d82b321a3331211.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c545764505bb00578a870c5e39493a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce781fcab3b08eb3baafbca4a01bb8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4309cc517da10cf325b0003e50d8da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a363df9127fb019f87ec53470c50dcc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.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,在四边形
中,已知
,
,
,
,
.
是直角三角形吗?请说明理由.
(2)连接
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3d69c69c46ac34f560546c22af120be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c3ec174b1ce835cc8737ff6ce57e52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b40d0d2f3cdd8981bb792ad87efb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】如图,
中,
,
,点D,E分别是
,
的中点,点F在
上,且
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/243a9ae75886b75c37f88a0ba655fa31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/6/acdeafd7-ec00-4b63-9dc5-a97a3edc1622.jpg?resizew=213)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,在矩形ABCD中,
,
,对角线AC,BD相交于点O,点E,F分别为CD,DA延长线上的点,且
,
,连接EF,G为EF的中点,连接OE,交AD于点H,连接GH.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/26/9fc4404d-39e8-4dcb-8a85-b7dece5e710e.png?resizew=244)
(1)求证:H是OE的中点;
(2)求GH的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a19338598965bb3856cdd0236bbf694.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc39144b305c67d44410d41053a1d28.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/26/9fc4404d-39e8-4dcb-8a85-b7dece5e710e.png?resizew=244)
(1)求证:H是OE的中点;
(2)求GH的长.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
真题
名校
【推荐1】如图,在△ABC中,AB=AC,点D、E分别是线段BC、AD的中点,过点A作BC的平行线交BE的延长线于点F,连接CF.
(2)求证:四边形ADCF为矩形.
(2)求证:四边形ADCF为矩形.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐2】如图,点O是线段AB上的一点,OA=OC,OD平分∠AOC交AC于点D,OF平分∠COB,CF⊥OF于点F.求证:四边形CDOF是矩形.
![](https://img.xkw.com/dksih/QBM/2020/12/4/2606912571539456/2614676810186752/STEM/506dd4f576ff4d0584c1252e6150f8ff.png?resizew=116)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】如图,在菱形
中,E,F分别是
,
的中点,且
.求菱形各个内角的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe85ce9d53e36aa2f4167383e204415e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/a6ed857f-d699-4208-848c-3ec29731ed95.png?resizew=199)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,矩形ABCD中,AD=6,DC=8,菱形EFGH的三个顶点E,G,H分别在矩形ABCD的边AB,CD,DA上,AH=2,连结CF.
(1)若DG=2,求证:四边形EFGH为正方形;
(2)若DG=6,求△FCG的面积.
(1)若DG=2,求证:四边形EFGH为正方形;
(2)若DG=6,求△FCG的面积.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/17/66c0acbe-5bd6-432d-b047-bd3db03231c3.png?resizew=189)
您最近一年使用:0次