[求作]相互平分的三线段
<br/><font face="新宋体" size="5">已知△ABC<br/>请您作出线段AX、BY、CZ<br/>使得AX平分BY,BY平分CZ,CZ平分AX</font> <p>各边的黄金分割点</p>回复:(hejoseph)各边的黄金分割点
梅内劳斯定理计算一下不就得了. <font face="仿宋_GB2312" size="5">谢谢楼上二位大哥的指导,可以出示具体数据吗?</font> <p class="MsoNormal" align="left" style="BACKGROUND: white; MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 19.5pt; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><font face="隶书"><font color="#000000"><font size="5">欢迎翻阅以下帖子,给个解法或者提示:<p></p></font></font></font></p><p class="MsoNormal" align="left" style="BACKGROUND: white; MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 19.5pt; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><font face="仿宋_GB2312"><font size="5"><font face="隶书" color="#000000" size="5"> </font><a title="《[自编]构造三点,以已知定点为内心》作者:watt5151
发表于:2008-11-15 10:09:00
最后发贴:以下是引用hejoseph在..." href="http://bbs.mjtd.com/forum.php?mod=viewthread&tid=71827"><font size="5"><font color="#000000"><font face="隶书"><span style="mso-bidi-font-size: 12.0pt;">[<span lang="EN-US">自编</span>]</font><span lang="EN-US"><font face="隶书">构造三点,以已知定点为</font>内心</span></font></font></a><font color="#000000">
<p></p></font></span></font></font></p><p class="MsoNormal" align="left" style="BACKGROUND: white; MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 19.5pt; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><a title="《[求作]划分△ABC的周长与面积》
作者:watt5151
发表于:2008-11-20 9:45:00
最后发贴:温馨提示,注意内心:过..." href="http://bbs.mjtd.com/forum.php?mod=viewthread&tid=71974"><font face="仿宋_GB2312"><font size="5"><font color="#000000"><span style="mso-bidi-font-size: 12.0pt;">[<span lang="EN-US">求作</span>]<span lang="EN-US">划分</span><span lang="EN-US">△</span>ABC<span lang="EN-US">的周长与面积</span></font></font></font></a><font face="仿宋_GB2312"><font size="5"><font color="#000000">
<p></p></font></font></font></span></p><p class="MsoNormal" align="left" style="BACKGROUND: white; MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 19.5pt; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><a title="《[自编]由一个“难作之图”想到的 . .》
作者:watt5151
发表于:2008-11-23 18:14:00
最后发贴:以下是引用chen..." href="http://bbs.mjtd.com/forum.php?mod=viewthread&tid=72063"><font face="仿宋_GB2312" color="#000000" size="5">[<span lang="EN-US" style="FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma;"><span lang="EN-US">自编</span>]<span lang="EN-US">由一个</span>“<span lang="EN-US">难作之图</span>”<span lang="EN-US">想到的</span> . .</font></a><p></p></span></p><p class="MsoNormal" align="left" style="BACKGROUND: white; MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 19.5pt; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><a title="《[求作]相互平分的三线段》
作者:watt5151
发表于:2008-11-18 12:05:00
最后发贴:谢谢楼上二位大..." href="http://bbs.mjtd.com/forum.php?mod=viewthread&tid=71917"><font face="仿宋_GB2312"><font size="5"><font color="#000000"><span style="mso-bidi-font-size: 12.0pt;">[<span lang="EN-US">求作</span>]<span lang="EN-US">相互平分的三线段</span></font></font></font></a><font face="仿宋_GB2312"><font size="5"><font color="#000000">
<p></p></font></font></font></span></p><p class="MsoNormal" align="left" style="BACKGROUND: white; MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 19.5pt; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><a title="《[求作]正方形外一点》
作者:watt5151
发表于:2008-12-12 17:59:00
最后发贴:以下是引用yimi..." href="http://bbs.mjtd.com/forum.php?mod=viewthread&tid=72568"><font face="仿宋_GB2312"><font size="5"><font color="#000000"><span style="mso-bidi-font-size: 12.0pt;">[<span lang="EN-US">求作</span>]<span lang="EN-US">正方形外一点</span></font></font></font></a><font face="仿宋_GB2312"><font size="5"><font color="#000000">
<p></p></font></font></font></span></p><p class="MsoNormal" align="left" style="BACKGROUND: white; MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 19.5pt; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><a title="《[求作]X形截线》
作者:watt5151
发表于:2008-12-8 9:42:00
最后发贴:好象我看错题了..." href="http://bbs.mjtd.com/forum.php?mod=viewthread&tid=72438"><font face="仿宋_GB2312"><font size="5"><font color="#000000"><span style="mso-bidi-font-size: 12.0pt;">[<span lang="EN-US">求作</span>]X<span lang="EN-US">形截线</span></font></font></font></a><font face="仿宋_GB2312"><font size="5"><font color="#000000">
<p></p></font></font></font></span></p><p class="MsoNormal" align="left" style="BACKGROUND: white; MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 19.5pt; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><shapetype id="_x0000_t75" stroked="f" filled="f" path="m@4@5l@4@11@9@11@9@5xe" opreferrelative="t" ospt="75" coordsize="21600,21600"><stroke joinstyle="miter"></stroke><formulas><f eqn="if lineDrawn pixelLineWidth 0"></f><f eqn="sum @0 1 0"></f><f eqn="sum 0 0 @1"></f><f eqn="prod @2 1 2"></f><f eqn="prod @3 21600 pixelWidth"></f><f eqn="prod @3 21600 pixelHeight"></f><f eqn="sum @0 0 1"></f><f eqn="prod @6 1 2"></f><f eqn="prod @7 21600 pixelWidth"></f><f eqn="sum @8 21600 0"></f><f eqn="prod @7 21600 pixelHeight"></f><f eqn="sum @10 21600 0"></f></formulas><path oconnecttype="rect" gradientshapeok="t" oextrusionok="f"></path><lock aspectratio="t" vext="edit"></lock></shapetype><shape id="_x0000_i1025" alt="" type="#_x0000_t75" style="WIDTH: 12pt; HEIGHT: 12pt;"><imagedata ohref="http://www.mjtd.com/bbs/skins/Default/filetype/jpg.gif" src="file:///C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\msohtml1\01\clip_image001.gif"><font color="#000000"></font></imagedata></shape><p></p></p> <p><font color="#5566aa" size="5">楼主为6楼srliwenq的证明补写个作法:</font></p><p> </p><p> </p><p><font color="#4444bb" size="4">有兴趣的朋友不妨看下:</font></p><p><font color="#4444bb" size="4"></font> </p><p> </p>
页:
[1]