如图,
是
的直径,C为
上一点,射线
与
相切于点C,过点A作
交
于点D,垂足为点E,连接
,
,若
,
,则阴影部分的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51ae949669447e566b8f4d5938163a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9817d6eaf6f9454152b2891f33aaa760.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2023-05-04 16:20:57
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【推荐1】如图,在
中,
,
,
,垂足为
,延长
至
.取
,若
的周长为12,则
的周长是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/17/6d0b8ceb-06ab-4a19-9b9a-cee4cdd0a11a.png?resizew=152)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/998329f9cdb86f5d60d7d5d70fc3781e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/17/6d0b8ceb-06ab-4a19-9b9a-cee4cdd0a11a.png?resizew=152)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】在矩形
中,对角线
、
相交于点
,
平分
交
于点
,
,连接
,则下面的结论中正确的有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
①
是等边三角形;②
是等腰三角形;③
;④
;⑤
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4291de543d7ac195df8f2d0bfed0ecbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96bcaab1157f577919c7abc73a66ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/022f0dc17db5fcc83b204dc845447ffc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/983a45a4ef187b9cb0682d59a9dcfeaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca7b8ab7744c97d136d96bdcd9b402cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/183ddea815bc87c8666d6735c5d19fd9.png)
A.2个 | B.3个 | C.4个 | D.5个 |
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【推荐1】如图,正六边形
内接于
,点
在
上,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85f6d79bc161f5e6b384c5497c369c01.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,⊙O是△ABC的外接圆,∠BOC=120°,则∠BAC的度数是( )
![](https://img.xkw.com/dksih/QBM/2018/9/2/2023282397110272/2023791957196800/STEM/061aa80f30c248edae885d148e1209d0.png?resizew=87)
![](https://img.xkw.com/dksih/QBM/2018/9/2/2023282397110272/2023791957196800/STEM/061aa80f30c248edae885d148e1209d0.png?resizew=87)
A.70° | B.60° | C.50° | D.30° |
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【推荐1】如图,正五边形ABCDE内接于
,PD与
相切于点D,连接OE并延长,交PD于点P,则∠P的度数是( )
![](https://img.xkw.com/dksih/QBM/2022/4/9/2954259874717696/2957257402376192/STEM/8947a5e8-b7a2-4779-953c-c7b90049dbba.png?resizew=279)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/2022/4/9/2954259874717696/2957257402376192/STEM/8947a5e8-b7a2-4779-953c-c7b90049dbba.png?resizew=279)
A.36° | B.28° | C.20° | D.18° |
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【推荐2】如图,Rt△ABC 中,∠C=90°,AB=13,BC=5,则其内切圆半径为( )
![](https://img.xkw.com/dksih/QBM/2019/1/1/2109543501824000/2112099972096000/STEM/0a1b7b661e0c4bb5a2b551792a6c6847.png?resizew=155)
![](https://img.xkw.com/dksih/QBM/2019/1/1/2109543501824000/2112099972096000/STEM/0a1b7b661e0c4bb5a2b551792a6c6847.png?resizew=155)
A.1 | B.2 | C.3 | D.4 |
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【推荐1】如图,AB为⊙O的直径,CD切⊙O于点D,AC⊥CD交⊙O于点E,若∠BAC=60°,AB=4,则阴影部分的面积是()
![](https://img.xkw.com/dksih/QBM/2018/8/11/2008167512489984/2010212399841281/STEM/c9c6a607235a4c38b2ecdecdb7734bb2.png?resizew=145)
![](https://img.xkw.com/dksih/QBM/2018/8/11/2008167512489984/2010212399841281/STEM/c9c6a607235a4c38b2ecdecdb7734bb2.png?resizew=145)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,已知扇形AOB的圆心角为60°,
.点P从点O出发,先沿半径OA再沿
匀速运动到B停止.设点P的运动路程为x,直线BP所截扇形AOB的右侧部分的面积为y,当点P分别在半径OA、
上时的情形如图1和图2,y随x变化的图象如图3,则b和c的值分别是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a99044cdedf9e67bffd16a7eeeadf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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