如图,在四边形
中,
.过点D作
,延长
至点F,使
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/10/b042b831-8574-4723-8dcb-5c233fc97330.png?resizew=161)
(1)求证:四边形
是矩形;
(2)求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5b7606d48e8ea1b503cbc6c6c5ee229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bffd657e48b15b9b54a55817e2c26b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/642e5819b3cc66e83b5103f4e9315db6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/10/b042b831-8574-4723-8dcb-5c233fc97330.png?resizew=161)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcca8b9ba7a9fdd7d18ce9c1e86d2cd5.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
更新时间:2023-09-23 10:31:09
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图①,在平行四边形
中,
,对角线
的长为方程
的两根,且
.
(1)请判断四边形
为何特殊的平行四边形,说明你的理由.
(2)在(1)成立的情况下,如图②,作
,F 为
的中点,连结
,若
,试求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a7cefa14a90337bbbb6e378d8a892d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9cebf2f601dcd9061f1cbd47654d231.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cc8872e1f347a0b74e8fa0558d12516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/771df37a312dac1fb332a31a10340c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62bb0bd26989407ca3cd593909ea6ea2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/f97157ee-d2aa-4bb6-bd48-59d20df08a9c.png?resizew=231)
(1)请判断四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)在(1)成立的情况下,如图②,作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3f5dc11efe60b4fd9a13b1d6b83842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40cf622bba19ecaa44173fa7ac89dc93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74e0212491e4b2d7525de9a87fab3a6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
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【推荐2】已知:如图,平面直角坐标系中,O是坐标原点,点A(2,3),点B在第四象限,△ABO中,OA=OB,∠AOB=90°.
![](https://img.xkw.com/dksih/QBM/2022/1/7/2896516141441024/2944608189292544/STEM/29aac87dbdce4a15b63574f9ae798c49.png?resizew=147)
(1)求点B的坐标;
(2)求AB直线解析式.
![](https://img.xkw.com/dksih/QBM/2022/1/7/2896516141441024/2944608189292544/STEM/29aac87dbdce4a15b63574f9ae798c49.png?resizew=147)
(1)求点B的坐标;
(2)求AB直线解析式.
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解答题-证明题
|
适中
(0.65)
【推荐1】如图,
为
的直径,且
,
的平分线交
于点
.
![](https://img.xkw.com/dksih/QBM/2021/4/16/2701078877372416/2705862478176256/STEM/75728599-e0f9-4979-9acb-d8d74e20deeb.png)
(1)求
的长;
(2)
平分
交
于点
.
①求证:
;
②若弦
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/2021/4/16/2701078877372416/2705862478176256/STEM/75728599-e0f9-4979-9acb-d8d74e20deeb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b28f28ced0531d1df34fcf04c6c67f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b34233772c4c26d6669499d9b1f15a.png)
②若弦
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
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【推荐2】如图,有一四边形纸片
,
,测得
,
,
,
,求这张纸片的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0dcd1e5a4383edc90e632416ae17e22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea6d6597d07c8e98ca0c21d2527942ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb8610ba53f34de2459b4644b0296532.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b67ad3c0a4c1f0e6a24be2756d72eb00.png)
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解答题-证明题
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【推荐1】如图,矩形ABCD中,点P是线段AD上任意一点,点Q为BC上一点,且AP=CQ.
(1)求证:BP=DQ;
(2)若AB=4,且当PD=5时四边形PBQD为菱形.求AD为多少.
(1)求证:BP=DQ;
(2)若AB=4,且当PD=5时四边形PBQD为菱形.求AD为多少.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/15/3796f078-9bac-43f7-bffe-01b6fb7bc195.png?resizew=262)
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【推荐2】如图,在平行四边形ABCD中,点M,N是AD边上的点,BM,CN交于点O,AN=DM,BM=CN.
(1)求证:平行四边形ABCD是矩形.
(2)若∠BOC=90°,MN=1.AM•MD=12,求四边形ABCD的面积.
(1)求证:平行四边形ABCD是矩形.
(2)若∠BOC=90°,MN=1.AM•MD=12,求四边形ABCD的面积.
![](https://img.xkw.com/dksih/QBM/2021/12/18/2874973003259904/2880957473218560/STEM/1105711d-4e13-498e-9d5c-af5c41137e1f.png?resizew=228)
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