在正方形ABCD中,点F是边AB上一点,连接DF,点E为DF中点.连接BE、CE、AE.
![](https://img.xkw.com/dksih/QBM/2022/3/9/2932525681860608/2933757979271168/STEM/a124ed890e434b0a85843f97e801820b.png?resizew=122)
(1)求证:△AEB≌△DEC;
(2)当EB=BC时,求∠AFD的度数.
![](https://img.xkw.com/dksih/QBM/2022/3/9/2932525681860608/2933757979271168/STEM/a124ed890e434b0a85843f97e801820b.png?resizew=122)
(1)求证:△AEB≌△DEC;
(2)当EB=BC时,求∠AFD的度数.
更新时间:2022-03-11 08:48:47
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在
中,
是
边上的一点,
,
平分
,交
边于点
,连接
.
;
(2)若
,
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be28a89d6d899b5da865d0088c4adc16.png)
(2)若
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解答题-问答题
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适中
(0.65)
【推荐2】综合与探究
已知在
中,
,D为直线
上一动点(点D不与点B,点C重合),以
为边作
(其中
),连接
.
![](https://img.xkw.com/dksih/QBM/2022/12/26/3139390970339328/3141929871024128/STEM/fa48ead349404582994db6b85def17f0.png?resizew=554)
(1)如图1,当点D在边
上时,求
的度数.
(2)如图2,当点D在边
的延长线上运动时,类比第(1)问,请你猜想线段
,
,
的数量关系,并说明理由.
(3)如图3,当点D在边
的延长线上时,
,求线段
的长.
已知在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ed2b331902d2da7a2b786c544b33f9.png)
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(1)如图1,当点D在边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1384d0a02d097ac7aa8a19e8da6f9767.png)
(2)如图2,当点D在边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
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(3)如图3,当点D在边
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解答题-问答题
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适中
(0.65)
【推荐1】已知
一张直角三角形纸片,其中
,小亮将它绕点A逆时针旋转β后得到
,直线
交直线
于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/10/a3f65452-7b54-4754-85bd-7c86f3653d31.png?resizew=165)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/10/83a56a6f-1045-48e5-8268-1b966bee9ee8.png?resizew=121)
(1)如图1,当
时,
所在直线与线段
有怎样的位置关系?请说明理由;
(2)如图2,当
时,若
为等腰三角形,直接写出β的度数;
(3)当
时,若直线
与直线
所夹锐角为
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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(1)如图1,当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)如图2,当
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(3)当
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解答题-证明题
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适中
(0.65)
【推荐2】如图,P是正方形ABCD内一点,连接PA、PB、PC,将△ABP绕点B顺时针旋转到△CBP′的位置.
![](https://img.xkw.com/dksih/QBM/2013/12/23/1573691639963648/1573691646001152/STEM/3d364b771c1842758d7bfdc485a563a8.png)
(1)旋转中心是点 ,点P旋转的度数是 度;
(2)连结PP′,求证:△BPP′是等腰直角三角形;
(3)若PA=2,PB=4,∠APB=135°.
①求△BPP′的周长;
②求PC的长.
![](https://img.xkw.com/dksih/QBM/2013/12/23/1573691639963648/1573691646001152/STEM/3d364b771c1842758d7bfdc485a563a8.png)
(1)旋转中心是点 ,点P旋转的度数是 度;
(2)连结PP′,求证:△BPP′是等腰直角三角形;
(3)若PA=2,PB=4,∠APB=135°.
①求△BPP′的周长;
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您最近一年使用:0次
解答题-证明题
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适中
(0.65)
【推荐1】如图,在
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解答题-问答题
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适中
(0.65)
【推荐2】(1)解方程:
.
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(2)如图,在
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解答题-证明题
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适中
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【推荐1】如图,正方形ABCD中,点E,F分别在边,AD,CD上,且
,BD和EF交于点O,延长BD至点H,使得
,并连接HE,HF.
求证:
;
试判断四边形BEHF是什么特殊的四边形,并说明理由.
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解答题-证明题
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适中
(0.65)
【推荐2】如图,
为正方形
的边
上一动点(
与
、
不重合),连接
,过点
作
交
于点
,将
沿
所在的直线对折得到
,延长
交
的延长线于点
.
(1)试探究
与
的数量关系,并证明你的结论;
(2)当
,
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的长;
(3)当
,
时,求
的长.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81efd8e471483f95c80f0be8e677da32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf6db7e3845eb40841290768df39bafc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/14/8c88d3a0-d868-4eea-bd32-d852c1d9811a.png?resizew=160)
(1)试探究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be6ddb29f937261f6c820e25183a627.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8305c4ffbf876642440c3d28e91e9f.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68edae7cfce80ebe62490c07a4ae318b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c93f50ca7ec106f75c3b902f74a334d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
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