已知
,点
、
分别在直线上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/13/62939f39-7394-424a-8102-96dac45db222.png?resizew=661)
(1)如图
,请直接写出
、
、
三个角满足的数量关系______.
(2)如图
,分别作
与
的角平分线,交于点
,探索
与
的数量关系并予以证明.
(3)在图
中完成作图并填空:分别作
与
的角平分线,交于点
,过点
作
,设
,请直接写出
的度数(用含
的式子表示) ______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ddf9142d06c526d281b0d8110b6ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/13/62939f39-7394-424a-8102-96dac45db222.png?resizew=661)
(1)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db866ecc0c098bfc32ec8a43b65bdd58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98c337e4b1f98e4fa86c461365308b65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31123a003f9c8be58e0d78399e43c14a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e8c257f5615d30660cef4157c6b273.png)
(3)在图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db866ecc0c098bfc32ec8a43b65bdd58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04bb78b6df6e4eceb22d3ccc0b7a6e9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7123fba1c19326e3f3050c9287ff44c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10001e519f5b44a462e3b3ff42681257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2022-09-20 10:44:42
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】填空,补全推理过程:
如图所示,
,求证:
.
(已知),
( ),
(等量代换),
( ),
(两直线平行,同位角相等).
(已知),
________(等量代换),
∴________( ),
( ).
如图所示,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88012900dd693ee7c8f5f53956e00710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4354365ca0929f8a606ed0bf341e4ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c08980b6afedc04aa04f385791f0163.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e50ce9ef89a466df68124a1dccff5663.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d98228bd5ecb89ef69c62a71f8e1ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86fe1041e153af50ad01f8aa3e6cb311.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0400e10cd7396abad2c7b72ff42f1b0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc2e16fe202ace573a17161d1b8e2212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c73c256acb5e374fef82ea9653322821.png)
∴________( ),
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bda281982119ab3bdc8abfc05ad2f5a.png)
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解答题-问答题
|
适中
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名校
【推荐2】如图,点P在直线CD上,AP与EF交于O点,∠AOE=∠1.∠FOP=∠2.
![](https://img.xkw.com/dksih/QBM/2022/5/5/2973016779120640/2974230898401280/STEM/7b81505c-de82-43b8-921e-8a4d49d51fda.png?resizew=156)
(1)若∠1=55°,求∠2的度数;
(2)若∠BAP+∠APD=180°试判断AE与FP的位置关系,并说明你的理由
![](https://img.xkw.com/dksih/QBM/2022/5/5/2973016779120640/2974230898401280/STEM/7b81505c-de82-43b8-921e-8a4d49d51fda.png?resizew=156)
(1)若∠1=55°,求∠2的度数;
(2)若∠BAP+∠APD=180°试判断AE与FP的位置关系,并说明你的理由
您最近一年使用:0次
解答题-问答题
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适中
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【推荐1】已知AB∥CD.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/8/01613ef0-27c9-4c2a-a272-56538d079e53.png?resizew=434)
(1)如图1,你能得出∠A+∠E+∠C=360°吗?
(2)如图2,猜想出∠A 、∠C、∠E的关系式并说明理由.
(3)如图3,∠A.、∠C、∠E的关系式又是什么?
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/8/01613ef0-27c9-4c2a-a272-56538d079e53.png?resizew=434)
(1)如图1,你能得出∠A+∠E+∠C=360°吗?
(2)如图2,猜想出∠A 、∠C、∠E的关系式并说明理由.
(3)如图3,∠A.、∠C、∠E的关系式又是什么?
您最近一年使用:0次
解答题-证明题
|
适中
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【推荐2】阅读下列材料:
如图1,
,
,
分别是
,
上的点,点
在
,
之间,连接
,
.用等式表示
,
与
的数量关系.
小刚通过观察,实验,提出猜想:
.
接着他对猜想的结论进行了证明,证明思路是:
过点
作
,由
,可得
,根据平行线的性质,可得
,
,从而证得
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/5be5fba3-e351-41f9-88be-db9824a3d51c.png?resizew=204)
请你利用小刚得到的结论或解题思路,完成下列问题.
已知
,
,
分别是
,
上的点,点
在
,
之间,连接
,
.
(1)如图2,若
,
,则
的度数为______;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/9bc25163-0b46-4cf4-8ad9-782ed8f029fb.png?resizew=203)
(2)如图3,
与
的平分线交于点
,用等式表示
与
的数量关系,并证明;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/888117a1-20be-4907-8c16-3adad9007407.png?resizew=210)
(3)如图4,
与
的平分线交于点
,直接用等式表示
与
的数量关系.
如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9b4a78c3b85dafdaec2e4e6dc87bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa70e7c9ef8b856b494d370b7d76482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/431bd1ab475f5c7936a3b45b317abe99.png)
小刚通过观察,实验,提出猜想:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a19a0383ba99f036177eb8cd03bc709e.png)
接着他对猜想的结论进行了证明,证明思路是:
过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/030c0eb60f94a13c023e4c916c74b4e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3322db904c87b09f96b7b5d496a93ee8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fe1616bda1722c37b5e5e9069d6e536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25ed148dc358034e748c3feec4aeb097.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a19a0383ba99f036177eb8cd03bc709e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/5be5fba3-e351-41f9-88be-db9824a3d51c.png?resizew=204)
请你利用小刚得到的结论或解题思路,完成下列问题.
已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
(1)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/821f76423ec6e76af923a1c787eaac9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f9c4bf956f4a85cf1abebeb2af12e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94d5b88cdac96fd5aeb53283673fafe9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/9bc25163-0b46-4cf4-8ad9-782ed8f029fb.png?resizew=203)
(2)如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9b4a78c3b85dafdaec2e4e6dc87bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/431bd1ab475f5c7936a3b45b317abe99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa70e7c9ef8b856b494d370b7d76482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6b858c70410f981ca3e22f791585c7e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/888117a1-20be-4907-8c16-3adad9007407.png?resizew=210)
(3)如图4,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9b4a78c3b85dafdaec2e4e6dc87bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/431bd1ab475f5c7936a3b45b317abe99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa70e7c9ef8b856b494d370b7d76482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6b858c70410f981ca3e22f791585c7e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/d515ed28-4353-4678-8137-0a6a41b86ceb.png?resizew=193)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在等腰直角
中,
,
,点
,
分别为
,
的中点,
为线段
上一动点(不与点
,
重合),将线段
绕点
逆时针方向旋转
得到
,连接
交
于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/e7caa699-31c1-4815-bb43-f4e5e7b73fa7.png?resizew=241)
(1)证明:
;
(2)①当点F运动到什么位置时,四边形
是正方形?请你说明理由;
②当
时,求证:点
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](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/8455657dde27aabe6adb7b188e031c11.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba4a2d91017ac3b01c0030de0ce57abd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/e7caa699-31c1-4815-bb43-f4e5e7b73fa7.png?resizew=241)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fb65161f9508867ed7847606781fa7e.png)
(2)①当点F运动到什么位置时,四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0f875de8bec0ffc84b8142f81080058.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd5ffece886c1d1f361c437f9bec9820.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e212f54cb15d5b6c3ae532157d4c10a.png)
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解答题-证明题
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【推荐2】如图,在梯形ABCD中,AD//BC,∠ABC=90°,且AB是AD,BC的比例中项,求证:BD⊥AC.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/25/6aebb6a4-a059-4ad3-9d8b-70efcc40665f.png?resizew=187)
您最近一年使用:0次