如何区别凹或是凸多边形
如题所述
第1个回答 2014-07-31
凸:内角全小于180
第2个回答 2014-07-31
选A..C
追答
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/03087bf40ad162d974b6cb2a12dfa9ec8a13cda8?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/72f082025aafa40f195067eba864034f78f01975?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/29381f30e924b899d4c9d00e6d061d950a7bf60b?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/29381f30e924b899d4c9d00e6d061d950a7bf60b?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
追问标准线要画在那里阿?
追答每条边都可以,
我画的虚线那种
只要有一条边把图形分成两部分,就是凹多边形
追问
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/b151f8198618367ab23fe8eb2d738bd4b31ce556?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
那这个就是凹咯?
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/d50735fae6cd7b89a1cbadb50c2442a7d9330e64?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
追答恩,因为别的边可以把这个图形分成两部分,就是凹
对的,这种题会判断就行
追问谢了学霸
追答我专治疑难杂症,以后可以多问
追问这个能加好友不??
追答好像不能吧,我今天才下载的这个,还不清楚
追问有qq吧?!
以后可以带我走向学霸之路!
追答你发吧,我加你,
追问1084329509备注上写学霸
追答你这有密码,刚访问你空间,
追问啥密码阿?
追答你看访客最上面那个加我吧
本回答被提问者采纳
第3个回答 2014-07-31
就是有没有向里面凹进去的,比如AC就有
追答懂了吗?