如图1,在正方形
中,点
是边
上一点,点
在
延长线上,且
,连接
,
,
.
(1)判断
的形状,并证明;
(2)如图2,连接
与
交于点G.
①求证:
;
②若
,
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86d1125b47dec1c5e93143ee59ad862a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/2/6307f3b4-0b15-4f82-8868-9095a2677b93.png?resizew=328)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3379f93f65cfb92526ffc4a9859cbded.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82773737609e65dea3c5c67099f1b10d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2516be28a4f5ff54e3ff45eec1ad9d08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
更新时间:2023-06-24 23:20:03
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】已知点D是等边
的边
上一动点,连接
,将线段
绕点D顺时针旋转
得到线段
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/22/44ea9cf3-d6d8-4807-ad83-38d4a3e48a1f.png?resizew=270)
(1)如图1,连接
,若
,且
,求线段
的长;
(2)如图2,若点F为线段
的中点,连接
,求证:
.
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c0927afc571a7c966c98192040979e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/22/44ea9cf3-d6d8-4807-ad83-38d4a3e48a1f.png?resizew=270)
(1)如图1,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/531d6f90f144551a35d494b1fe7d2b89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a31f87f3fa441f645b9f99d3809ad0c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
(2)如图2,若点F为线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7acb5e90dbcc3f3340916a3a11cc4612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d216511526a5834a019505223197d45.png)
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解答题-证明题
|
适中
(0.65)
【推荐2】如图,在
中,
于点D,E为
的中点,过点A作
交
的延长线于点F,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/23/da3d443e-7de5-4653-8a62-68bb7cc613de.png?resizew=224)
(1)求证:四边形
为矩形;
(2)若
,则矩形
的面积为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/880efdb2b4ac4861ad808e0162d082be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/23/da3d443e-7de5-4653-8a62-68bb7cc613de.png?resizew=224)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a5a2949b3d520ed03d57126c7d4d8d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f844e8b0c8ccb29cd2335b7dfd412d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a5a2949b3d520ed03d57126c7d4d8d.png)
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【推荐1】如图1,正方形ABCD中,点P、Q是对角线BD上的两个动点,点P从点B出发沿着BD以1cm/s的速度向点D运动;点Q同时从点D出发沿着DB以2cm的速度向点B运动.设运动的时间为xs,△AQP的面积为ycm2,y与x的函数图象如图2所示,根据图象回答下列问题:
(1)a= .
(2)当x为何值时,
APQ的面积为6cm2;
(3)当x为何值时,以PQ为直径的圆与
APQ的边有且只有三个公共点.
(1)a= .
(2)当x为何值时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
(3)当x为何值时,以PQ为直径的圆与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://img.xkw.com/dksih/QBM/2021/12/16/2873946616119296/2874592356974592/STEM/75d9349832954837a8433c193dcbab98.png?resizew=365)
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解答题-问答题
|
适中
(0.65)
名校
【推荐2】如图,点M是正方形
的边
上一点,连接
,E是
上一点,连接
、
,
的平分线交
延长线于点F,连接
.
(1)若
,
,则
_____________.
(2)若点E为线段
的中点,
,
,求
的长.
(3)若点E和点C关于直线
对称,
,求四边形
的面积.(结果用含a的代数式表示)
![](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/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7d19f963f7c803bcfcbb265ec6d4304.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/4/b0b75964-8faa-4fcb-99f9-5ef3c05fee84.png?resizew=140)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e63c404fccc5a0986dc00e837b86ce2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b8989fa01bff5c6a39c32c9eddaf935.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6fdecc899f66d582f609fa88de9aa54.png)
(2)若点E为线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/324e63228cb7d363459b3516bf6bea96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aacfe9a00440bad0cc2b3563867b05f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
(3)若点E和点C关于直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a588fa0845b97467c3e97f7346977279.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85719346f464a101d365d42be27450a3.png)
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解答题-问答题
|
适中
(0.65)
【推荐1】(1)数学理解:如图①,是等腰直角三角形,过斜边
的中点D作正方形
,分别交
、
于点E、F,求
、
、
之间的数量关系;
(2)问题解决:如图②,在任意直角内,找一点D,过点D作正方形
,分别交
、
于点E、F,若
,求
的度数.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,正方形
、等腰
的顶点
在对角线
上(点
与
、
不重合),
与
交于
,
延长线与
交于点
,连接
.
(1)求证:
.
(2)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fb2c151aceb0a976d89640a0acfd669.png)
(3)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec218734bf10b68d0796ccbab6074a5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f6927cc2a930203ac34366383e76ef.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/56f6927cc2a930203ac34366383e76ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51dfab0c1ec275ff83d08c7293968c4.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fb2c151aceb0a976d89640a0acfd669.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa52cee201df6eeb982871a8fb1e28aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1f42de2ec4b4eb243d35815080da6fa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/6/5d1c94d9-1519-46dd-8e4f-61574240d6ee.png?resizew=140)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】已知关于x、y的方程组
与
的解相同.
(1)求a、b的值;
(2)如果a、b是等腰三角形的两边,求该等腰三角形的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235dd950d5722131f4199d0c80886b9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/378d4fdd7036eb7daaeb2b0dd739691d.png)
(1)求a、b的值;
(2)如果a、b是等腰三角形的两边,求该等腰三角形的周长.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图.
和
都是等腰直角三角形, ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c97d391ac19de51282e916a0d824e6a2.png)
的顶点
在
的斜边
上.
求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417d8c68aac736fa56f7fc6f6c8a07cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/990b4e6a33c821c298dec22cf9fbf76e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c97d391ac19de51282e916a0d824e6a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417d8c68aac736fa56f7fc6f6c8a07cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/990b4e6a33c821c298dec22cf9fbf76e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39dfdf6cff328e586c0b1b10d3abfff.png)
![](https://img.xkw.com/dksih/QBM/2020/9/10/2546706690613248/2547449899458560/STEM/49f81907-ae8f-4386-baef-bdd7cafa9198.png?resizew=172)
您最近一年使用:0次