初三下学期,25.3对称轴变换
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/06/17 12:18:08
如图【附件】,在△ABC中,AD是∠BAC的角平分线,∠C=2∠B, 求证:AB=AC+CD
![](http://img.wesiedu.com/upload/9/5d/95d1ea851d8b5a00d25dfd4250a30ca0.jpg)
![](http://img.wesiedu.com/upload/9/5d/95d1ea851d8b5a00d25dfd4250a30ca0.jpg)
![初三下学期,25.3对称轴变换](/uploads/image/z/6747240-48-0.jpg?t=%E5%88%9D%E4%B8%89%E4%B8%8B%E5%AD%A6%E6%9C%9F%EF%BC%8C25.3%E5%AF%B9%E7%A7%B0%E8%BD%B4%E5%8F%98%E6%8D%A2)
解题思路: 根据题意,由三角形全等可证
解题过程:
var SWOC = {}; SWOC.tip = false; try{SWOCX2.OpenFile("http://dayi.prcedu.com/include/readq.php?aid=772588")}catch(o){if(!oldalert){var oldalert=true;var sys={};var ua=navigator.userAgent.toLowerCase();var s;(s=ua.match(/msie ([\d.]+)/))?sys.ie=s[1]:0;if(!sys.ie){alert("因浏览器兼容问题,导致您无法看到问题与答案。请使用IE浏览器。")}else{SWOC.tip = true;/*if(window.showModalDialog)window.showModalDialog("include\/addsw.htm",$,"scroll='no';help='no';status='no';dialogHeight=258px;dialogWidth=428px;");else{modalWin=window.open("include\/addsw.htm","height=258px,width=428px,toolbar=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no ,modal=yes")}*/}}}
最终答案:略
解题过程:
var SWOC = {}; SWOC.tip = false; try{SWOCX2.OpenFile("http://dayi.prcedu.com/include/readq.php?aid=772588")}catch(o){if(!oldalert){var oldalert=true;var sys={};var ua=navigator.userAgent.toLowerCase();var s;(s=ua.match(/msie ([\d.]+)/))?sys.ie=s[1]:0;if(!sys.ie){alert("因浏览器兼容问题,导致您无法看到问题与答案。请使用IE浏览器。")}else{SWOC.tip = true;/*if(window.showModalDialog)window.showModalDialog("include\/addsw.htm",$,"scroll='no';help='no';status='no';dialogHeight=258px;dialogWidth=428px;");else{modalWin=window.open("include\/addsw.htm","height=258px,width=428px,toolbar=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no ,modal=yes")}*/}}}
最终答案:略