名校
1 . 已知:如图,
,垂足分别是S、N、Q,且
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4073e0f2e6afcf5f976d6532ab518e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f932463d801a667248115c73138d3eb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be73f60cf525fbda702fefa8314e86d6.png)
![](https://img.xkw.com/dksih/QBM/2020/10/20/2575122683985920/2577264134717440/STEM/5b3e819d9c7a41ec9f286cf1bb3eece0.png?resizew=185)
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2 . 如图,在半径为3的
中,AB是直径,AC是弦,D是
的中点, AC与BD交于点
若E是BD的中点,则AC的长是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/6/b3fdca4c-87d5-4f19-9404-6aca29983cf7.png?resizew=135)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a0a98828cab1d9bd9184aa53750bd6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7186b756542b54106635d9256528aa91.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/6/b3fdca4c-87d5-4f19-9404-6aca29983cf7.png?resizew=135)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-10-23更新
|
720次组卷
|
2卷引用:陕西省榆林市第一中学2020-2021学年高一上学期第一次月考数学试题
名校
3 . 如图,由四个边长为1的小正方形构成一个大正方形,连接小正方形的三个顶点,可得到
,则
中AC边上的高是( )
![](https://img.xkw.com/dksih/QBM/2020/10/20/2575122683985920/2577264134537216/STEM/2f878c27c92d449a87ec1246756a9112.png?resizew=119)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/2020/10/20/2575122683985920/2577264134537216/STEM/2f878c27c92d449a87ec1246756a9112.png?resizew=119)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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4 . 如图所示,已知
的度数是( )
![](https://img.xkw.com/dksih/QBM/2020/10/20/2575122683985920/2577264134463488/STEM/a444167d067943c8bf01be5449effe37.png?resizew=136)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95336e9b98d47f04c287181ab69f419e.png)
![](https://img.xkw.com/dksih/QBM/2020/10/20/2575122683985920/2577264134463488/STEM/a444167d067943c8bf01be5449effe37.png?resizew=136)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 已知
中,
,
,
,M是BC的中点,点P是线段BC上一点,满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3e7f748d88b4eadfd1643c6b31fdf08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e240a6378adf6d23ebf9cc710c9bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4571bc078dfee6b36f70f3e167673a8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c353d17341805c8a8e69de03d81cf1f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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真题
6 . 如图,
中,
,以
为直径的半圆分别交
于点
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a71a9d21f77e9535de152bb33f802bb.png)
_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/030b985a2fdc0a7fc22831a700e77d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a71a9d21f77e9535de152bb33f802bb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/4/acd3b520-1567-4282-bba6-02d35ddc205c.png?resizew=176)
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2019-01-30更新
|
1408次组卷
|
2卷引用:2014年全国普通高等学校招生统一考试理科数学(陕西卷)
11-12高三上·内蒙古巴彦淖尔·期中
7 . 如图,AB是半圆的直径,C是AB延长线上一点,CD切半圆于点D,CD=2,
,垂足为E,且E是OB的中点,求BC的长.
![](https://img.xkw.com/dksih/QBM/2011/12/28/1570637123715072/1570637129138176/STEM/65620ace4dc047cba5f23bdd10a14db3.png?resizew=68)
![](https://img.xkw.com/dksih/QBM/2014/5/15/1571723428175872/1571723433828352/STEM/52e10cf5-3607-43b4-8930-8355d551c34a.png?resizew=204)
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