如图,已知点
在线段
上,分别以
,
为边长在
上方作正方形
,
,点
为
中点,连接
,
,
.设
,
.
(1)若
,判断
的形状为______;
(2)请用含
,
的式子表示
的面积;
(3)若
的面积为
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc7ee0ef8945ba1b90e59aed7cab889.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/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c2293f93791a597bf0162411f3395f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d42e97eee705d164e6ac6de9ecd6d1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caa7f65e4db07f1ddbc342a5cc9b28b1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/6/b5dba7fb-bd5d-460b-b229-57eb90cb09fa.png?resizew=203)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b104867a12d24a353d94858c2fa17c8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/568173802070b53ead410b8c5cef8ba3.png)
(2)请用含
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/568173802070b53ead410b8c5cef8ba3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/568173802070b53ead410b8c5cef8ba3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beb6823a329628699619a39cde927510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
更新时间:2023-08-27 23:18:49
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【推荐1】火车站、机场、邮局等场所都有为旅客提供打包服务的项目.现有一个长、宽、高分别为a、b 、30的箱子(其中a>b),准备采用如图①、②的两种打包方式,所用打包带的总长(不计接头处的长)分别记为
.
![](https://img.xkw.com/dksih/QBM/2018/12/21/2101404357935104/2106761335775232/STEM/b170c4b99486496d9de9ce133f8ec168.png?resizew=358)
(1)图①中打包带的总长
=________.
图②中打包带的总长
=________.
(2)试判断哪一种打包方式更节省材料,并说明理由.(提醒:先判断再说理,说理过程即为比较
的大小.)
(3)若b=40且a为正整数,在数轴上表示数
的两点之间有且只有19个整数点,求a 的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://img.xkw.com/dksih/QBM/2018/12/21/2101404357935104/2106761335775232/STEM/b170c4b99486496d9de9ce133f8ec168.png?resizew=358)
(1)图①中打包带的总长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
图②中打包带的总长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
(2)试判断哪一种打包方式更节省材料,并说明理由.(提醒:先判断再说理,说理过程即为比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
(3)若b=40且a为正整数,在数轴上表示数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
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【推荐2】如果一个自然数M各个数位均不为0,且能分解成
,其中A和B都是两位数,且A十位比B的十位数字大1,A和B的个位数字之和为9,则称M为“九九归一数”,把M分解成
的过程称为“九九归一分解”.
例如:∵
,
,
,∴368是“九九归一数”;
∵
,
,
,∴1632不是“九九归一数”.
(1)判断378和297是否是“九九归一数”?并说明理由;
(2)把一个“九九归一数”M进行“九九归一数分解”,即为
,A的各个数位数字之和与B的各个数位数字之和的和记为
;A的各个数位数字之和与B的各个数位数字之和的差记
.且
能被5整除,求出所有满足条件的自然数M.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df69c6a544f62a016490b012c353ae7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df69c6a544f62a016490b012c353ae7.png)
例如:∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f00b0706ce8dbfb0bbc191b493d5f8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859770ecc6617c18ad66e33cc9f394fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5813d422c59f92210107e4868390ac4.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/399a1cc2fc461bca5fb5a0dafc344e6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f918ee9934af929561349f7d607dd1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f480b53ee6bc43e6f2667516cc6be97.png)
(1)判断378和297是否是“九九归一数”?并说明理由;
(2)把一个“九九归一数”M进行“九九归一数分解”,即为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b51fbbd4026c6aac7205f4f56c29157b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fc90c2d43a9cafd8d2782a8334c5890.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e271ca3c76165aa54cce0e5b6b12083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8184c2a42dc3cbe74a1e76e4fac972c.png)
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解题方法
【推荐1】如图,
的直径
为
,弦
为
的平分线交
于点
.
(1)求
的长;
(2)试探究
之间的等量关系,并证明你的结论;
(3)连接
为半圆
上任意一点,过
点作
于点
,设
的内心为
,当点
在半圆上从点
运动到点
时,求内心
所经过的路径长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6293f10977e09f6bf2be1c49fb2c874.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/add5eafe2cc9395c886f6e4b3e2efdaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)试探究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16421255981067a04eb466fd7bef0e1c.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d701f89d4d5b237ca8318ad31e3045e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1776d156423ea523de87fbca6c0b6019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f27bced1a5a1b475bc82404cd35fa8bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bb5c86b48eca5ab9351840f67d190.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/2021/1/22/2641830311550976/2643805089808384/STEM/5f4a9184-47ce-4573-862c-8d5a43d10dd8.png)
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【推荐2】如图,
是以O为圆心,AB长为直径的半圆弧,点C是AB上一定点.点P是
上一动点,连接PA,PC,过点P作PD⊥AB于D.已知AB=6cm,设A、P两点间的距离为x cm,P、C两点间的距离为y1 cm,P、D两点间的距离为y2 cm.
![](https://img.xkw.com/dksih/QBM/2020/7/6/2500029222838272/2500269609312256/STEM/f04d6dfb64e74eae911fe345e2433c30.png?resizew=273)
小刚根据学习函数的经验,分别对函数y1和y2随自变量x变化而变化的规律进行了探究.下面是小刚的探究过程,请将它补充完整:
(1)按照下表中自变量x的值进行取点、画图、测量,分别得到y1和y2与x的几组对应值:
经测量,m的值是 ;(保留一位小数)
(2)在同一平面直角坐标系xOy中,描出补全后的表中各组数值所对应的点(x,y1),点(x,y2),并画出函数y1, y2的图象;
![](https://img.xkw.com/dksih/QBM/2020/7/6/2500029222838272/2500269609312256/STEM/c31e473ba58a4e6bbd90c18e90c5070e.png?resizew=234)
(3)结合函数图象,回答问题:△APC为等腰三角形时,AP的长度约为 cm.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://img.xkw.com/dksih/QBM/2020/7/6/2500029222838272/2500269609312256/STEM/f04d6dfb64e74eae911fe345e2433c30.png?resizew=273)
小刚根据学习函数的经验,分别对函数y1和y2随自变量x变化而变化的规律进行了探究.下面是小刚的探究过程,请将它补充完整:
(1)按照下表中自变量x的值进行取点、画图、测量,分别得到y1和y2与x的几组对应值:
x/cm | 0 | 1 | 2 | 3 | 4 | 5 | 6 |
y1/cm | 4.00 | 3.96 | m | 3.61 | 3.27 | 2.77 | 2.00 |
y2/cm | 0.00 | 0.99 | 1.89 | 2.60 | 2.98 | 2.77 | 0.00 |
(2)在同一平面直角坐标系xOy中,描出补全后的表中各组数值所对应的点(x,y1),点(x,y2),并画出函数y1, y2的图象;
![](https://img.xkw.com/dksih/QBM/2020/7/6/2500029222838272/2500269609312256/STEM/c31e473ba58a4e6bbd90c18e90c5070e.png?resizew=234)
(3)结合函数图象,回答问题:△APC为等腰三角形时,AP的长度约为 cm.
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【推荐1】如图,等腰三角形
中,
,D为
边上一点,E为射线
上一点,连
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/21/5906eb40-5c84-4ca9-928b-5bdff657d35f.png?resizew=525)
(1)如图1,点F在线段
上,连
、
.若
,
为等边三角形,
,
,求
的长;
(2)如图2,F为线段
的垂直平分线上一点,连接
、
、
,M为
的中点,连接
、
.若
,求证:
;
(3)如图3,
,D为
中点,F为
中点,
与
交于点G,将
沿射线
方向平移得
,连接
、
.若
,直接写出
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.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/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/21/5906eb40-5c84-4ca9-928b-5bdff657d35f.png?resizew=525)
(1)如图1,点F在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.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/b57fdd2a3642716fcf5100011eb3ec88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86338536656046e93b53672ade9a78b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0761165f1176f3a5fe4f7b052832316d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(2)如图2,F为线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c57b07f75e97d9f84718bd495ebcf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2273ae1ee99cec9c1304323bc9ebf75f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74fd9d9bcbfc57c3e14770ac8c11c987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c66697c06cd7cc692d5655e01f431836.png)
(3)如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc727c642cbc2181476b7dd8eca471e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2db8af15cdbc41b7dc73c418a70f46b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943712a5e96b16cc15d775cc4687237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb97aff0960e2640314888a38e7169c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb6e53c8957930ea2b4812bd18247e2b.png)
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【推荐2】如图1,在
中,
,点A,D是射线
上的点,以
为一边在
内作矩形
,点C在
边上.
![](https://img.xkw.com/dksih/QBM/2022/6/7/2996205259366400/2996267067875328/STEM/15cdd5d5-5102-493a-a6ef-94833bd1e1ec.png?resizew=203)
![](https://img.xkw.com/dksih/QBM/2022/6/7/2996205259366400/2996267067875328/STEM/8a130cf5-2906-4189-9813-c8dcbd96b21f.png?resizew=205)
![](https://img.xkw.com/dksih/QBM/2022/6/7/2996205259366400/2996267067875328/STEM/e722e867-ff7b-4324-9aad-b660b900e778.png?resizew=211)
(1)当点B在
边上时,求
的长;
(2)如图2,若A,B,O三点共线,且
是以
为腰的等腰三角形,
①
__________;
②求
的长;
(3)在图2的基础上,点A向右移动得到图3连接
,若
和
相似,直接写出
的长.(注:三角形全等可视为三角形相似的特殊情况)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dcc5eda9dd5eed6f286403ea90eeabb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e593020a4861ecce487615f479bc2ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dcc5eda9dd5eed6f286403ea90eeabb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc1bf5e95676f8a50cfa0e94fab3273f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://img.xkw.com/dksih/QBM/2022/6/7/2996205259366400/2996267067875328/STEM/15cdd5d5-5102-493a-a6ef-94833bd1e1ec.png?resizew=203)
![](https://img.xkw.com/dksih/QBM/2022/6/7/2996205259366400/2996267067875328/STEM/8a130cf5-2906-4189-9813-c8dcbd96b21f.png?resizew=205)
![](https://img.xkw.com/dksih/QBM/2022/6/7/2996205259366400/2996267067875328/STEM/e722e867-ff7b-4324-9aad-b660b900e778.png?resizew=211)
(1)当点B在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
(2)如图2,若A,B,O三点共线,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bbf9680f74a9ac5d934304654ce2771.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b78320944be39e9ccd29879dd2be83.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
(3)在图2的基础上,点A向右移动得到图3连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d6f2327f2fb63777d199e0d75f9539.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b83beedb3438153e6f728545fe3e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7ffcd1925a2b1259221c6a476152f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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解答题-问答题
|
较难
(0.4)
名校
【推荐1】如图,已知直线l的解析式为:y
x+4,它的图象与x轴、y轴分别交于A、B两点.
(1)求A、B两点的坐标及线段AB的长度;
(2)已知y轴上一点C的坐标为(0,m).
①若S△ABC=6,求点C的坐标;
②若点C到直线l与到x轴的距离相等,请直接写出点C的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3587ec884cc085c7dde28d56d21eef79.png)
(1)求A、B两点的坐标及线段AB的长度;
(2)已知y轴上一点C的坐标为(0,m).
①若S△ABC=6,求点C的坐标;
②若点C到直线l与到x轴的距离相等,请直接写出点C的坐标.
![](https://img.xkw.com/dksih/QBM/2021/3/1/2668712122368000/2673408261513216/STEM/c0bea6a51f6e4fd6bed9b95dfc01a9f3.png?resizew=218)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐2】点
是线段
上的动点,分别以
,
为边在
的同侧作正方形
与正方形
.
(1)如图1,连接
,
,判断
与
的位置关系和数量关系,并证明.
(2)如图2,将正方形
绕点
逆时针旋转,使得点
落在线段
上,
交
于点
,连接
,
,若
,
,求
.
(3)如图3,将正方形
绕点
旋转至如图的位置,且
,连接
,
交于点
,连接
,请直接写出
,
,
之间的数量关系.
![](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/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2bdc60a42a1addaf772c18972e576fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc497d9e08a3652fccce2674b5e1bfe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/9/ed39708e-5e9a-46ef-940a-4d4f4ab58b3c.png?resizew=526)
(1)如图1,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)如图2,将正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc497d9e08a3652fccce2674b5e1bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3cd8fbcd9eb594adb8367795d444d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb79c82e2ecee4cce178f5e9d79d39e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7284b8bb6ce0160345e55cca6609dba5.png)
(3)如图3,将正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc497d9e08a3652fccce2674b5e1bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca51f9403facfb2fe553702acc50124b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35d58f9019097bd05037aefd5c322916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35d58f9019097bd05037aefd5c322916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53b95463a97c60db3250cb641bf6523d.png)
您最近一年使用:0次