1 . 等边
中,
于点
,点
为
边上一动点,连接
,点
关于直线
的对称点为点
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/0e2768bb-593f-48bc-a280-beeef96717fd.png?resizew=459)
(1)如图1,点
恰好落在
的延长线上,则求
______
;
(2)过点
作
交
于点
,连接
交
于点
.
①如图2,试判断线段
、
和
之间的数量关系,并说明理由:
②如图3,直线
交
于点
,连接
点运动的过程中.当
取最小值时,请直接写出线段
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e1ddf6c0c55a38dcb6750bba4e37341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cae003af00d9a4a443168a520360f7a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/0e2768bb-593f-48bc-a280-beeef96717fd.png?resizew=459)
(1)如图1,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b753dbb5a670dd4f5e23bb919e44dda2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afedac49ce38f25e0a73e579133afe5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f3956f008cc29ca4bae44a087d5427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
①如图2,试判断线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
②如图3,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f3956f008cc29ca4bae44a087d5427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74560a1dfdf34011663a5f4252eb7fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/767dbeffdf9182a42cce2a544a9f09cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
您最近一年使用:0次
2024九年级下·全国·专题练习
2 . 已知
是等腰直角三角形,
,
,点D在线段
上运动.
![](https://img.xkw.com/dksih/QBM/2024/2/20/3437251039485952/3437349927059456/STEM/97a32909298448c79b34ed6ddc45b1e4.png?resizew=550)
(1)如图1,连接
,过点C作
交
的延长线于点E.过点A作
交
于点F,若
,
,求
的长;
(2)如图2,点H是
边上一点,连接
,过点A作
交
延长线于点G.若
,将
绕点D顺时针旋转
得到线段
,
交
于点K,连接
,过点C作
交
于点N,垂足为P.求证:
;
(3)如图3,若
,连接
并将
绕点D逆时针旋转
得到线段
,连接
、
,取
中点T,点R在
上且
,连接
,直接写出当
取得最小值时
的面积.
![](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/3d89ba4036a5d18ec4abed44d7fd8e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2024/2/20/3437251039485952/3437349927059456/STEM/97a32909298448c79b34ed6ddc45b1e4.png?resizew=550)
(1)如图1,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef6d946ec5bc75341f7e5fe400054464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ad6f8846d4294ae3789a6ddd17af5b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd019def185df32cbc2dfe0da99c7746.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)如图2,点H是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e4fa04825ac7d071968056322d88be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de13b90ee61450dcf26f2f04b010b3b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3064b70f24e9bbcab76e0dc61274b9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddd158a566da912ce1f2abf0c0432c16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0c6c1d2e001faabec3d2f3022268e81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d02938a759f4652429b7ad53beac8b1.png)
(3)如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c118858379800688c993a8b61270b356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5d0068cc7b31aff5ffa59edc3df4ac5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb0cb4b2e0a7af501779001e4f6bb6c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23c642e4e4a1fa59c83eac9288157c00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab142c659d5434d88d7f6f5d994cfd18.png)
您最近一年使用:0次
3 . 如图,正方形
中,点
是射线
上一点.
(1)如图1,点
在对角线
上,点
在边
上,
.求证:四边形
是正方形;
(2)如图2,点
在正方形
内,点
在边
上,四边形
是正方形,求
的大小;
(3)如图3,点
是射线
上一动点,四边形
是以
为对角线的正方形,
是线段
的中点,
,请直接写出
周长的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/31/02d5bc4c-1267-4a84-9aa6-fdc7c0651523.png?resizew=552)
(1)如图1,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9482cb7709ebf930e692b92005a58547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc7ee0ef8945ba1b90e59aed7cab889.png)
(2)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc7ee0ef8945ba1b90e59aed7cab889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e7106619c08f2bcc1d21f846e8a0de.png)
(3)如图3,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc7ee0ef8945ba1b90e59aed7cab889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c965f16192e57a8079a40a0304ef339b.png)
您最近一年使用:0次
4 . 问题背景:苏科版八年级下册数学教材第95页“探索研究”
的对角线
相交于点O,正方形
的顶点
与点O重合.将正方形
绕点
旋转,在这个过程中,这两个正方形重合部分的面积是正方形
面积的__________.
问题迁移:
(2)等边三角形
的中线
相交于点O,先将
绕点O逆时针旋转![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efc7b22d85ff04a0ac89743f0bea1f2.png)
,再沿线段
方向平移,得到
,点O、A、B的对应点分别为
、
、
,且
,在这个过程中,
的边
,
所在射线分别交AB,BC于点M,N.
①如图2,当
与
重合时,求证:
;
②如图3,当
时,判断
和
之间的数量关系,并说明理由;
问题拓展:
③如图4,连接MN,记
周长为
,在a、k的变化过程中,存在a、k的值,使得MN平分
的周长,此时,
的结果是否会发生变化?如不变,请求出其值;如变化,求出
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d578394cd8e4d7a705599269c512960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d609847e2ff3d64e5a514582c3ead0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d609847e2ff3d64e5a514582c3ead0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
问题迁移:
(2)等边三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc348871e8066c46f44b3fb43c3bad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efc7b22d85ff04a0ac89743f0bea1f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a80bc063d3a1f4e639b08002e947f992.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0d02d76af11a2b8bfb7d6e1b3c171f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fe32dfbd66709875c5b9f79c9496da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cfeef1499b1872f7528565f11542e97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0d02d76af11a2b8bfb7d6e1b3c171f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b48e33eaa40d01f976230d4b73ae91dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6637859805b7b01f7a9a64771563406e.png)
①如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fe32dfbd66709875c5b9f79c9496da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3522434b9c08255535c9a10c9ebf308e.png)
②如图3,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a2a34b4317deffa40ba34e269c2b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6072f215a1d76152831efea49910d2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43dfd029011889ae1da739cb62858c5f.png)
问题拓展:
③如图4,连接MN,记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8e5d8fe34df9b216ce4973233d3cabf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8e5d8fe34df9b216ce4973233d3cabf.png)
您最近一年使用:0次
名校
5 . (1)如图1,点O是等边
的内心,
的两边分别交
于点D、E,且
,若等边
的边长为6,求四边形
周长的最小值.
(2)为培养学生劳动实践能力,某学校计划在校东南角开辟出一块平行四边形劳动实践基地.如图2所示,劳动实践基地为
,点O为其对称中心,且
,点E、F分别在边
上,四边形
为学校划分给九年级的实践活动区域,九年级学生打算在四边形
区域种植两种不同的果蔬,即在
种植不同的果蔬.在点O处安装喷灌装置,且喷灌张角为
,即
,并修建
三条小路.现要求规划的三条小路
总长最小的同时,果蔬种植区域四边形
的面积最大.求满足规划要求的三条小路
总长的最小值,并计算同时满足四边形
面积最大时学校应开辟的劳动实践基地
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbee6d5731d6f4bb1e4f2ba3d89b7dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd3724385f98a2415ba27f8df4c31d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/993f7e3f4fa29a1cc68a43bbdc0d8b6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a9ba7b666dae8aa7aaec80a6811c91.png)
(2)为培养学生劳动实践能力,某学校计划在校东南角开辟出一块平行四边形劳动实践基地.如图2所示,劳动实践基地为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6ff111df72f99ab68071c3f44fa8cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd3724385f98a2415ba27f8df4c31d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06b4f851e051007c72fdb58c55113225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06b4f851e051007c72fdb58c55113225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd1764b346b865291ab72ff663f7d83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9b4bb7c5f4a856c3e0ca747fd64fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1682a8969f8f2065af4db14d04bf9f0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1682a8969f8f2065af4db14d04bf9f0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06b4f851e051007c72fdb58c55113225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1682a8969f8f2065af4db14d04bf9f0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06b4f851e051007c72fdb58c55113225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
您最近一年使用:0次
2024-05-28更新
|
182次组卷
|
2卷引用:2024年陕西省西安市雁塔区高新一中中考五模数学试题
6 . 如图所示,
中,
且
分别为边
边上的高,
相交于点F, 连接
则下列结论中:①
垂直平分
;②图中有3个等腰三角形;③
;④
的长度恰与
的周长相等;⑤如图,若点P是高
上一个动点,点Q是边
上一个动点,连接
,则
的最小值等于
的长度,其中正确的是______ (只填序号).
![](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/84cd5b01de1c1ef91f2529eb1caf9d42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1005d9def461d00556e3aced70ea2f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb0032f850bd19a3af6c44c416b0a2aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11b72b2cd16fee53bc61eafa6e1f862c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f5a0a6e5b3f489a7032ea5116c96024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/730aefccd2c61f6368edaf0e0034965e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c8563c09abcd5e110aa93d2f03d7363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/2023/7/9/3277306600415232/3282359920812032/STEM/54b5d02e5e374a61b3050300fe7c400a.png?resizew=194)
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7 . 如图,在正方形
中,
,点
是
上的一个定点,且
,点
是
边上一动点,连接
,以
为边在
的上方作正方形
,连接
,
.
(1)求证:
;
(2)求点
在从点
运动到点
的运动过程中,点
的移动距离;
(3)若随着点
的运动,直接写出
的最小值是______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b0393ce62b24aa5f9b740d4cc6743b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b3f1c63921a86b0493c0c6ba5793a48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/9/b5a04455-5c47-41aa-afa0-dd7a361feff4.png?resizew=138)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f44e63a9a6019f5faf872dced7ff4ab2.png)
(2)求点
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(3)若随着点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b22d328b3b59d69192b35a3b66550bb9.png)
您最近一年使用:0次
8 . 如图,在平行四边形
中,
是对角线,
,点E是
边上一点,连接
,将
绕着点A顺时针旋转
得到线段
.
(1)如图1,若
,连接
,
,
,求
的面积;
(2)如图2,若
,连接
交
于
,求证:
;
(3)若在(2)的条件下,
,点P为
边上一动点,连接
,将线段
绕着点E顺时针旋转60°得到线段
,连接
,当线段
取得最小值时,直接写出四边形
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/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/8/7aedf4e5-e128-40bd-aba8-9c976274da67.png?resizew=614)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d3b668d1439621cbf79a1e5d3386906.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6402c0f9eecfcdf73f9e87ca82a6f2c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f83f438d03ab124b627a7900543e91bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70ed026eebb36d67fa4a47daa746c5e4.png)
(3)若在(2)的条件下,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53d4296f59d2d6d5d5c1de6cf734d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f541f7ae7c39082d202efd28805c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f541f7ae7c39082d202efd28805c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b15febfda66e733f14aa7115ed4343a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84164c3962cb06e7f85bbef2fa1b7ab8.png)
您最近一年使用:0次
名校
9 . 如图,
为等边三角形,在过点
的射线上取一点
,连接
.
且
,
交
于点
,
,求
的长;
(2)如图2,若
,过点
作
于点
,猜想
,
,
的数量关系,并证明;
(3)如图3,若
且
,当
取最小值时,请直接写出
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ac2a5b9f08b1c21cabf0ec9b2cec3b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad42761295baf25695dd71ca58424a0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070bc896d35495237fd65576e9b6f88e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d4d00b86b2f067b902baf6e52f0faab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f61c04bb33c1f890029af10a9c6b132c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(3)如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a20cb14fea4a7cad4b7775a3dd67df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3a9ec45721f7b4d1c99917ac0d970f.png)
您最近一年使用:0次
名校
10 . 已知同一平面内,
和
都是等腰三角形,
,
.
.
(1)如图1,B、D、C三点在同一条直线上,点E在线段AC上,连接
,过D作
于点F,
于点H,若
,
.求
的长;
(2)如图2,若
,连接
,取
的中点F,连接
交
于点G,延长
与
交于点K.若
,求证:
;
(3)如图3,若
,点A与点E重合,
.点M为线段
中点,点N为线段
上一点,连接
,将
沿
翻折到同一平面内的
.连接
,再将线段
绕C点顺时针旋转
得到线段
,连接
,直接写出
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ac5396c5ea442e0364b50c1db3d2da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dca4fa129b5352b0bf5542965098ea0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd95dc30c0344788b94289c464a3158e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ad6a05106d8585451677c562b6fc4a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/2/035d0678-6161-4064-99d0-dc55d87898f2.png?resizew=419)
(1)如图1,B、D、C三点在同一条直线上,点E在线段AC上,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aa30a9ee227af2b387cf6e028c20d7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a10809d172017faa4b3bf06c8a61a5c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e33859c243a68d4e3ad8fb4baacf3db5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69ea03d2fa8742bb216771339f37960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/673e677c7ce6ef5fbbeda5eb47f56210.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55b0308660db2fb10cd4def9d6ed1b9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d061b9287fa27a3cfee3345baaa37eb1.png)
(3)如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69ea03d2fa8742bb216771339f37960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080ca48cd27d4bf9d9ef084b558fc17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cbec471ffed534e60ec40d48b9f0968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/491db0e3f7d072d59b510495fed27f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/236abcd5701f3d6d512f022a0f5abc9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/236abcd5701f3d6d512f022a0f5abc9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3730e2fa70360e60286cff11b37c3051.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4269756e8f5c76334abf90df7d63851.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
您最近一年使用:0次