如图,若AO⊥CO,BO⊥DO,且∠BOC=,则∠AOD等于( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/ade8edcf-662e-4dcd-b12a-2e9fc303ed43.png?resizew=144)
A.180°-2 | B.180°- | C.90°+![]() | D.2-90° |
18-19七年级下·全国·课后作业 查看更多[3]
沪科版七年级下册第10章 相交线、平行线与平移能力提升训练人教版七年级上第五章 相交线与平行线 5.1 相交线(2)(已下线)专题4.18 角(知识梳理与考点分类讲解)-2023-2024学年七年级数学上册基础知识专项突破讲与练(人教版)
更新时间:2019-02-19 15:51:44
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【推荐1】如图,直线
,
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,射线
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,
,
,交
于点
,交
于点
,
平分
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,
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;②
;③
;④
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A.②③④ | B.①③④ | C.①②③ | D.①②④ |
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【推荐1】如图,在
中,BE⊥CD,BF⊥AD,∠EBF=45°,CE=3,DF=1,则AF=( )
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【推荐2】如图,在同一平面内
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A.两点之间,线段最短 |
B.垂线段最短 |
C.经过直线外一点,有且只有一条直线与这条直线平行 |
D.在同一平面内,过一点有且只有一条直线与已知直线垂直 |
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