名校
1 . 已知在
中,
为
边的中点,连接
,将
绕点
顺时针方向旋转(旋转角为钝角),得到
,连接
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/19227b35-256a-4357-8fb4-ae1be772d39e.png?resizew=479)
(1)如图1,当
且
时,则
与
满足的数量关系是 ;
(2)如图2,当
且
时,(1)中的结论是否仍然成立?若成立,请写出证明过程;若不成立,请说明理由;
(3)如图3,延长
到点
,使
,连接
,当
,
时,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bbf9680f74a9ac5d934304654ce2771.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b14aeac55d519010de23642ac22cfb0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/19227b35-256a-4357-8fb4-ae1be772d39e.png?resizew=479)
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
(2)如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6eab933fd3ed8a3a412a6f268d4cef4.png)
(3)如图3,延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06293af3b5c700dde5b77927037ee4a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b33e6af6c777800c8fcd38f53374f80a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
您最近一年使用:0次
2 . 如图1,
与
均为等边三角形,将
绕点
逆时针旋转,旋转角为
(其中
),连接
,
,
是
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/31/24e0c63c-77a6-4a96-983b-1a99d0bad028.jpg?resizew=426)
(1)求证:
;
(2)如图2,连接
,当
的延长线经过点
时,请判断四边形
的形状,并说明理由;
(3)如图3,连接
,若
,在
绕点
旋转的过程中,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b96715995549e5e48494101570bb3bb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b96715995549e5e48494101570bb3bb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e915c7310f3781887a1afb99dbf949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4144763622b446911152e6a7ae740c74.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/31/24e0c63c-77a6-4a96-983b-1a99d0bad028.jpg?resizew=426)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a6574405000dab3fec93b438aa2de0.png)
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a1e7040f3c9d3f7d6038c8ce6d886.png)
(3)如图3,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b96715995549e5e48494101570bb3bb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
您最近一年使用:0次
名校
3 . 如图,平面直角坐标系中一条圆弧经过网格点A,B,C,点A在y轴上,点B的坐标为
,则该圆弧
的长为 ________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe8c987ef33b637489141ce7dee6162e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/4a599dc2-f582-4278-9bcc-5b7f757fce74.jpg?resizew=187)
您最近一年使用:0次
4 . 正方形与等边三角形
如图,P是
上一个动点.
(1)P在何处时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad5b61e25ec964d185735c58f2efc8d0.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad5b61e25ec964d185735c58f2efc8d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ddf2ae04265e2cbf674ab40bba45c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
5 . 如图1,在四边形
中,
,点
为线段
上一点,使得
,
,此时
,连接
,
,且
.
的长度;
(2)如图2,点
为线段
上一动点(点
不与
,
重合),连接
,以
为斜边向右侧作等腰直角三角形
.
①当![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
时,试求
的长度;
②如图3,点
为
的中点,连接
,试问
是否存在最小值,如果存在,请求出最小值;如果不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369eb8ad56da7dc1cdb7c43762be4bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dac4b6e138df1ff677092e8aad75eb38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcfd54e2fc770dd4053edcb973af1ffc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cf5b86308e9f777a6611503ba8d0e9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f09785a454d62cbbd2e16ed61ed172a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c45087cde2d66377517a3fce5553b35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
(2)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9466f26ee7c0db7a86de9eda0f881505.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4745d21979bb1e2a5c14e7eee49cc75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
②如图3,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b39addc1173a458af87ed5c5e3f06466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b39addc1173a458af87ed5c5e3f06466.png)
您最近一年使用:0次
6 . 如图,在矩形
中,
,点
,
为直线
上的两个动点,且
,将线段
关于
翻折得线段
,连接
.当线段
的长度最小时,
的度数为________ 度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/151f7aef7d0f56e18562f5a4030cf815.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e252f4bc1975af1c7a775b46fab64ee5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71420db6bb73de89341edd61a0ba1a54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa682427c5b7209c97e4310b920d5e17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa682427c5b7209c97e4310b920d5e17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c6b8e1f92787ee99936e37064064f04.png)
您最近一年使用:0次
7 . 如图,
为
的直径,
为
上一点,
和过点
的切线互相垂直,垂足为点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/21/969122f5-f4e6-4462-9cfb-4b01e167e281.png?resizew=479)
(1)求证:
平分
;
(2)如图2,若
,点
是半圆
的中点,连接
,求
的长;
(3)如图3,
交
于点
,点
是半圆
的中点,作
于点
,交
于点
,试探究
的数量关系.
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/21/969122f5-f4e6-4462-9cfb-4b01e167e281.png?resizew=479)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4189a0821a0ffab9dc171ecd279ba442.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47e5e5bb7d67cbd8be493a855a87fce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/430dfc0e41bcd1427cf7ceee14299cc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
(3)如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/141ee0cedfea5ae83aaac1106e2cc259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4d9a27b98bb1f3747328065ecbcf71d.png)
您最近一年使用:0次
名校
8 . 已知在
中,
为
边的中点,连接
,将
绕点
顺时针方向旋转(旋转角为钝角),得到![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88b9eee8c679265fa0291cc077209713.png)
,连接
,
.
(1)如图1,当
且
时,则
与
满足的数量关系是 ;
(2)如图2,当
且
时,(1)中的结论是否仍然成立?若成立,请写出证明过程;若不成立,请说明理由.
(3)如图3,延长
到点
,使
,连接
,当
,
时,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07e37b122a7273e1251ea3860e74c896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bec86a74ad3d806baac74e7fa59f942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88b9eee8c679265fa0291cc077209713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aa717a8a2558f1deb4e284347a0a7c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8120f2eeb724c756b5f84a14c6df527.png)
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421456e82c859184328587723f85034d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab41054fa9ce51b68e78d9c0cf398d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8120f2eeb724c756b5f84a14c6df527.png)
(2)如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421456e82c859184328587723f85034d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19818ce9d0765c2ead476eb9a67718a4.png)
(3)如图3,延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07e37b122a7273e1251ea3860e74c896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657f51cb443f86e5beced4423e7b25a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aa717a8a2558f1deb4e284347a0a7c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65e34f3fbb1adf23cf81d7005f4387a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
您最近一年使用:0次
名校
9 . 如图(1)正方形
和正方形
,边
在边
上,
,
.将正方形
绕点
逆时针旋转![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07681b79f2f245239f010b523171e26.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/20/6b9892a9-08ae-4f19-af76-b6e0c217ec2b.png?resizew=385)
(1)如图(2)正方形
旋转到此位置,求证:
;
(2)在旋转的过程中,当
时,试求
的长;
(3)在旋转的过程中,连接
,
的延长线交直线
于点
.当
时,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa9e716ca556082406c04f9e55c16536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07681b79f2f245239f010b523171e26.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/20/6b9892a9-08ae-4f19-af76-b6e0c217ec2b.png?resizew=385)
(1)如图(2)正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1596f7c0d0bab4e7e586d705d323e0d8.png)
(2)在旋转的过程中,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f224d15ee8fbf3741ec7813549a2924e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(3)在旋转的过程中,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/680b53673467d5e29454148104e32fec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
您最近一年使用:0次
10 . 如图所示,边长为
的正方形
中,对角线
,
交于点
,
在线段
上,连接
,作
交
于点
,连接
交
于点
,则下列结论:①
;②
;③
;④若
,则
,正确的个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/11027545-a96d-4ea8-b860-8f422eee9670.png?resizew=142)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40fe2cc764de5fa58e9d90d750c5c528.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fa1b5b6051d500fe6c6f1c19c7ee49f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb14e734cc2af2023414813b70217332.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6565d5775e62056d87863bd4b3a17a7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4280be91682e5d8a0d0704190319bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66f3922d5e6f75c2519eb4a7b0e5100f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/11027545-a96d-4ea8-b860-8f422eee9670.png?resizew=142)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次