如图,
是直线
上的一点,
.
(1)图中与
互余的角有______;
(2)写出图中相等的角______;(直角除外)
(3)
的补角是______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22346780f2b54d1b20fadc60d7c9b72f.png)
(1)图中与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b69d40b75d582c4b8ffa2369af1d41.png)
(2)写出图中相等的角______;(直角除外)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/605f2976297a0deaa1602ef09d6a5afa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/5/c15eae9b-91e3-499d-9676-db9d23aba8c6.png?resizew=204)
更新时间:2021-01-18 10:56:45
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相似题推荐
解答题-问答题
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适中
(0.65)
名校
【推荐1】如图,已知点O为直线
上一点,
平分
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/b5e4c63c-f2d7-48a7-b8eb-bf5366c8c308.png?resizew=248)
(1)若
,求
的度数;
(2)若
,猜想
是图中哪个已知角的平分线?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fff23b97062c1b80dfd2f36c13d57d35.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/b5e4c63c-f2d7-48a7-b8eb-bf5366c8c308.png?resizew=248)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b1dd3c503ff0b4e68f035709e34bc63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778d3556c2454a733a15629af5c2444f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beb1621f2b3686220a3bce8c0ab15a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
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【推荐2】如图,直线
相交于点O.
的内部,画射线
,使
,垂足为O(用三角尺画图);
(2)在(1)的条件下,若
,求
的度数;
(3)在(1)的条件下,
与
有何关系,为什么?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da988eac2b646bd694e50e6a58f61c7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb52ca9f6cc798309656837933132505.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/598c4ff9fc8518fa4829e39254d3f6e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feacc4489396c7c13f2509fb20d2950b.png)
(2)在(1)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2a5a6d4dd6d93465b3b39a62d919201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11958e353ab7f028c8a0238e02acf1dc.png)
(3)在(1)的条件下,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd0e3d565ad1f1c5482a7b1c1d4be6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf3119c19f5145624d22c24761b9c30.png)
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解答题-证明题
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【推荐1】请补全下面的解题过程:
已知:如图,点A,O,B在同一条直线上,
平分
,
.
求证:
是
的平分线.
证明:因为
是
的平分线,
所以
.
因为
.
所以
①
,
②
.
因为
,
所以③
④.
所以
是
的平分线.
已知:如图,点A,O,B在同一条直线上,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418ebb89d29f4f631b055c911e8d178a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8cc88685997c7586d1d4bf75a055433.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7307ac7510cf35f74337d368b94da4e5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/16/9f4d79dc-e2eb-4806-a284-69ec683251a4.png?resizew=172)
证明:因为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418ebb89d29f4f631b055c911e8d178a.png)
所以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/881af6e5050e1fc4f5cfc0cd3e89a326.png)
因为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8cc88685997c7586d1d4bf75a055433.png)
所以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5914f699511e39206851c17dbf3ba40a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c06422e1d55db3077257af113df4bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8476de98253159f41fa0df3bd5f18b98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
因为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/881af6e5050e1fc4f5cfc0cd3e89a326.png)
所以③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
所以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7307ac7510cf35f74337d368b94da4e5.png)
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【推荐2】如图,在等腰直角三角形
中,
,点A,B分别在坐标轴上.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/e5440041-9878-4b00-9a01-edc25cf26210.png?resizew=470)
(1)如图①,点C的横坐标满足
,求点B的坐标;
(2)如图②,将
摆放至x轴恰好平分
交x轴于点M,过点C作
x轴于点D,求
的值;
(3)如图③,若
,分别以
为直角边在第一,第二象限作等腰
和等腰
,连接
交y轴于点P,当点B在y正轴上移动时,线段
的长度是否发生改变,若不变,请直接写出
的值;若变化,请直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0038fd38bb04187e5cb2d60099c720b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/e5440041-9878-4b00-9a01-edc25cf26210.png?resizew=470)
(1)如图①,点C的横坐标满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ff820d18528d01db0fafb3995b4114.png)
(2)如图②,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b734b1fd166972af9e6e702ef4953e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f30533da2e1d2a958dc906c37eba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/254d7dbe0135527214af1a241ea2bbfd.png)
(3)如图③,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e3dfcd8aff269dd5aba398816490c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a817cadf8bc4f29fb811c8e3e5a2184.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0d33fb0ee0857654dad65e294ab41f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1a3b94566843e92ce775ff6bdf386fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
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