已知∠α=70°,则∠α的补角为( )
A.120° | B.110° | C.70° | D.20° |
更新时间:2016-12-05 19:27:44
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【推荐2】下列说法中,正确的是( )
①若
,则
的余角是
;②若
,则
和
互为补角;③一个角的补角一定是锐角;④若
,则点
在线段
上.
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1bc2047d160636aab21e0f7fe9483a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f499dafff1e395152396f8035aafd88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb303643bf116abd0f4be2c4bb943a20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/682627cc16a6e64bfaa5386f2dca8774.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.①② | B.①④ | C.①②③ | D.②③④ |
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