下列图形中,能确定
的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bb109f318275794edf8e8e9f88c1e38.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2019-04-11 14:08:12
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【推荐1】下列命题中是假命题的是( )
A.对顶角相等 | B.两直线平行,同旁内角互补 |
C.同位角相等 | D.三角形的内角和是180° |
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【推荐2】下列说法中,错误的是( )
A.对顶角相等 |
B.三角形的三条角平分线一定交于一点 |
C.a、b、c是同一平面内的三条直线,如果![]() ![]() ![]() |
D.a、b、c是同一平面内的三条直线,如果![]() ![]() |
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【推荐1】如图
,
交
于点
,连接
,若
,
,则
的度数为( )
![](https://img.xkw.com/dksih/QBM/2023/6/19/3262908425543680/3263582339670016/STEM/b59278d9d0e94022bfcb6787cd4d6e6b.png?resizew=148)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e702e136211878dce558e0457f15df63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735bd70c2fa2bf51fd7aa448b20d0be1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b871a762469393cdd22f15aa49ebb8f9.png)
![](https://img.xkw.com/dksih/QBM/2023/6/19/3262908425543680/3263582339670016/STEM/b59278d9d0e94022bfcb6787cd4d6e6b.png?resizew=148)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】(2017•怀化)如图,直线a∥b,∠1=50°,则∠2的度数是( )
A.130° | B.50° | C.40° | D.150° |
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【推荐1】如图,已知
是
的外接圆,
是
的直径,
是
的弦,
,则
的度数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a329d9d4516563a49cd40d638a34ff7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727ad3e630a224303d6d3b8ad5c114ba.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/25/2b5b14ef-5f14-4a3c-92e2-0d398c97a022.png?resizew=128)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,BD是⊙O的直径,∠CBD=40°,则∠A的度数为( ).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/60d1c6f2-efa2-40d0-acf4-22682e6205c4.png?resizew=191)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/60d1c6f2-efa2-40d0-acf4-22682e6205c4.png?resizew=191)
A.30° | B.40° | C.50° | D.60° |
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