在
中,下列条件:①
;②
;③
;④
,
,
.能判断
是直角三角形的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede13b42d56deff8a8fb57249092ad94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d7957c6d50b8423d9f6792300cdacde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e597138bc1ed3f80e3d4c5cc736584b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad09921d9904335a83078262ce62a473.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.1个 | B.2个 | C.3个 | D.4个 |
更新时间:2024-03-28 09:23:47
|
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【推荐1】下列命题是假命题的是( ).
A.两直线平行,内错角相等 | B.三角形内角和等于180° |
C.对顶角相等 | D.相等的角是对顶角 |
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【推荐2】如图,
,若
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,则
的度数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/3098385e-4c59-49cf-a09b-fbb947a74fed.png?resizew=239)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fc6e054603981be6df20c79d4b60396.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c3975d0e87ea5028d37444dca76b331.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dd0e5d2b9d24cd42a701551ccdfe2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/3098385e-4c59-49cf-a09b-fbb947a74fed.png?resizew=239)
A.80° | B.60° | C.50° | D.30° |
您最近一年使用:0次
单选题
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较易
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【推荐1】在下列条件中:①在
中,
;②三角形三边长分别为
,
,
;③在
中,三边a,b,c满足
;④三角形三边长分别为
,
,
(
为大于1的整数),能确定
是直角三角形的条件有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf8367832fe4afe83c3764701b04c3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb3f00a02e931a265f86950296602f0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/491405e462230737d5dc84abcbaca821.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790635e9f23a17231a31b8f28ff7ee40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae656b08e1fd803ed4c7713705644cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f1e94f660b7d05de4be4b5fbd9041f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad491e5b5e14c49ef8b7004ebcfcef9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0623207595425920f16e76a7f8f268b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
单选题
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较易
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您最近一年使用:0次