题目内容
下列各组数据不能作为直角三角形的三边长的是
- A.a="3" b="4" c=5
- B.a="6" b="8" c=10
- C.a="5" b="12" c=13
- D.a="13" b="16" c=18
D
本题考查勾股定理及逆定理
若
,则
,则
,即满足勾股定理,则
可作为直角三角形的三边长;
若
,则
,则
,即满足勾股定理,则
可作为直角三角形的三边长;
若
,则
,则
,即满足勾股定理,则
可作为直角三角形的三边长;
若
,则
,则
,即满足勾股定理,则
不可作为直角三角形的三边长;
故本题答案为D
本题考查勾股定理及逆定理
若
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/24/e0f89978-0dd4-40d3-afdc-a4c84c58671f/paper.files/image001.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/24/e0f89978-0dd4-40d3-afdc-a4c84c58671f/paper.files/image002.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/24/e0f89978-0dd4-40d3-afdc-a4c84c58671f/paper.files/image003.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/24/e0f89978-0dd4-40d3-afdc-a4c84c58671f/paper.files/image001.png)
若
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/24/e0f89978-0dd4-40d3-afdc-a4c84c58671f/paper.files/image004.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/24/e0f89978-0dd4-40d3-afdc-a4c84c58671f/paper.files/image005.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/24/e0f89978-0dd4-40d3-afdc-a4c84c58671f/paper.files/image003.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/24/e0f89978-0dd4-40d3-afdc-a4c84c58671f/paper.files/image004.png)
若
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/24/e0f89978-0dd4-40d3-afdc-a4c84c58671f/paper.files/image006.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/24/e0f89978-0dd4-40d3-afdc-a4c84c58671f/paper.files/image007.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/24/e0f89978-0dd4-40d3-afdc-a4c84c58671f/paper.files/image003.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/24/e0f89978-0dd4-40d3-afdc-a4c84c58671f/paper.files/image006.png)
若
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/24/e0f89978-0dd4-40d3-afdc-a4c84c58671f/paper.files/image008.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/24/e0f89978-0dd4-40d3-afdc-a4c84c58671f/paper.files/image009.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/24/e0f89978-0dd4-40d3-afdc-a4c84c58671f/paper.files/image010.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/24/e0f89978-0dd4-40d3-afdc-a4c84c58671f/paper.files/image008.png)
故本题答案为D
![](http://thumb2018.1010pic.com/images/loading.gif)
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下列各组数据不能作为直角三角形的三边长的是
A.a="3" b="4" c="5" | B.a="6" b="8" c="10" | C.a="5" b="12" c="13" | D.a="13" b="16" c=18 |