1 . 如图,将一副三角板摆放在一起,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/9f9e7776-838b-4682-855a-b7e04d89c26e.png?resizew=155)
(1)求
的度数;
(2)依题意画出图形:延长线段
至点
,使
,
是
的角平分线.直接写出
的度数是 ;
(3)在(2)的条件下,直接写出图中所有与
互余的角 .(不再添加字母)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9d74d47d93f5540e801834aa71b3bc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb01d2b57580731c8b807ac8cffc8ba.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/9f9e7776-838b-4682-855a-b7e04d89c26e.png?resizew=155)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/246a86f34603eaf2e6a948681b831b0d.png)
(2)依题意画出图形:延长线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ac49caae8e3b8869d19beeff98966e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cfc2771aa0d5b97d2297f8a26a6f6b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb65bee4fb8c2cbdd36e318cd652f928.png)
(3)在(2)的条件下,直接写出图中所有与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/246a86f34603eaf2e6a948681b831b0d.png)
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2 . 若
,则
的余角为 ___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e31ac506cb688ae4a64f3bfad04559cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780d8fd6c6c1deeeb45e15f639719e02.png)
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3 .
度,则它的余角等于_____ 度,它的补角等于______ 度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c168a6f778b485d9f214c28d735b2fe.png)
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名校
4 . 已知
,则
的余角是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 如图,已知
平分
,
平分
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/92a6510f-6214-40bc-ae03-5fea54b739a5.png?resizew=122)
(1)若
与
互为余角,且
,求
的度数;
(2)若
,其他条件不变,求
的度数;
(3)若
,其他条件不变,求
的度数
(4)从(1)(2)(3)中你能看出什么规律?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fed1f57a835af4e9022e27603d12d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22df2977de56cc69be0c1e847653d7a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/92a6510f-6214-40bc-ae03-5fea54b739a5.png?resizew=122)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f92f279be7c8a11dcd2c0a97116bdcbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77603496a315e39db671c0c1e4256cc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db91877e869a8d58b2bab2c39756d7fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27935c1ef4df2d52ac697678a3c8f39d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6978615637bd3febf56d23798f65306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27935c1ef4df2d52ac697678a3c8f39d.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91c48b122d08449a4a92af0700163c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27935c1ef4df2d52ac697678a3c8f39d.png)
(4)从(1)(2)(3)中你能看出什么规律?
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6 . 如图:点
是
的边
上的一点,按下列要求画图并回答问题.
点画
的垂线,交
于点
;
(2)过C点修一条到
最短的路
,画出图形,并说明理由 ;
(3)比较线段
,
,
的大小(请直接写出结论);
(4)请写出第(3)小题图中所有与
互余的角 (不增添其它字母)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)过C点修一条到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
(3)比较线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(4)请写出第(3)小题图中所有与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
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7 . 如图,点A、O、D在同一条直线,
,则图中互为余角的角有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/08236fd5-c69c-42dd-b86e-beeffde97eee.jpg?resizew=178)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc555fc96abd64541f576f6cd0b34cd9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/08236fd5-c69c-42dd-b86e-beeffde97eee.jpg?resizew=178)
A.2对 | B.5对 | C.6对 | D.7对 |
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8 . 已知
与
互余,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfd66005da7b2dff722700167903b69a.png)
__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780d8fd6c6c1deeeb45e15f639719e02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15417741fba20d681ab4414b07339099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcd168fe9615fdd28cd162f3b2538007.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfd66005da7b2dff722700167903b69a.png)
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9 . 已知一个角的度数是
,则它的余角的度数是 ______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f4b8e3f862f52bcf305d2a599a8e8af.png)
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10 .
角的余角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3ec68a9810c8b898cdbbb7a273b057.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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