<!DOCTYPE html>
<html class="client-nojs vector-feature-language-in-header-enabled vector-feature-language-in-main-menu-disabled vector-feature-language-in-main-page-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-0 vector-toc-not-available vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-0 skin-theme-clientpref-os vector-sticky-header-enabled skin-theme-clientpref-thumb-standard" lang="pt" dir="ltr"><head>
    <meta charset="UTF-8">
    <title>R.e.C</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="icon" type="image/png" href="./_res_/favicon.png">
    <link rel="canonical" href="https://pt.wikipedia.org/wiki/R.e.C"> <link href="./_mw_/ext.cite.parsoid.styles.css" rel="stylesheet" type="text/css">
    <link href="./_mw_/ext.cite.styles.css" rel="stylesheet" type="text/css">
    <link href="./_mw_/ext.wikimediamessages.styles.css" rel="stylesheet" type="text/css">
    <link href="./_mw_/mediawiki.skinning.content.parsoid.css" rel="stylesheet" type="text/css">
    <link href="./_mw_/skins.vector.icons.css" rel="stylesheet" type="text/css">
    <link href="./_mw_/skins.vector.search.codex.styles.css" rel="stylesheet" type="text/css">
    <link href="./_mw_/skins.vector.styles.css" rel="stylesheet" type="text/css">
    <meta name="ResourceLoaderDynamicStyles" content="">
    <link href="./_mw_/ext.gadget.keepPDU.css" rel="stylesheet" type="text/css">
    <link rel="stylesheet" type="text/css" href="./_mw_/site.styles.css">
    <link rel="stylesheet" type="text/css" href="./_mw_/noscript.css">
    <link rel="stylesheet" type="text/css" href="./_res_/footer.css">
    <link rel="stylesheet" type="text/css" href="./_res_/vector-2022.css">
  </head>
  <body class="skin--responsive skin-vector skin-vector-search-vue mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject page-R_e_C rootpage-R_e_C skin-vector-2022 action-view">
    <div class="mw-page-container">
      <div class="mw-page-container-inner">
        <div class="mw-content-container">
          <main id="content" class="mw-body">
            <header class="mw-body-header vector-page-titlebar">
              <h1 id="firstHeading" class="firstHeading mw-first-heading"><span lang="pt" dir="ltr"><span class="mw-page-title-main">R.e.C</span></span></h1>
            </header>
            <a id="top"></a>
            <div id="bodyContent" class="vector-body ve-init-mw-desktopArticleTarget-targetContainer" aria-labelledby="firstHeading" data-mw-ve-target-container="">
              <div id="contentSub">
                <div id="mw-content-subtitle"></div>
              </div>
              <div id="mw-content-text" class="mw-body-content mw-content-ltr" lang="pt" dir="ltr"><div class="mw-content-ltr mw-parser-output" lang="pt" dir="ltr" data-mw-parsoid-version="0.23.0.0-alpha29" data-mw-html-version="2.8.0"><section data-mw-section-id="0" id="mwAQ"><span class="mw-empty-elt" typeof="mw:Transclusion" id="mwAg"><style data-mw-deduplicate="TemplateStyles:r70707633" typeof="mw:Extension/templatestyles">
/* start https://pt.wikipedia.org/ */


.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}.mw-parser-output .infobox{border:1px solid #a2a9b1;border-spacing:3px;background-color:#f8f9fa;color:black;margin:0.5em 0 0.5em 1em;float:right;clear:right;font-size:88%;line-height:1.5em;width:22em}.mw-parser-output .infobox-header,.mw-parser-output .infobox-label,.mw-parser-output .infobox-above,.mw-parser-output .infobox-full-data,.mw-parser-output .infobox-data,.mw-parser-output .infobox-below,.mw-parser-output .infobox-subheader,.mw-parser-output .infobox-image,.mw-parser-output .infobox-navbar,.mw-parser-output .infobox th,.mw-parser-output .infobox td{vertical-align:top}.mw-parser-output .infobox-label,.mw-parser-output .infobox-data,.mw-parser-output .infobox th,.mw-parser-output .infobox td{text-align:left}.mw-parser-output .infobox .infobox-above,.mw-parser-output .infobox .infobox-title,.mw-parser-output .infobox caption{font-size:125%;font-weight:bold;text-align:center}.mw-parser-output .infobox-title,.mw-parser-output .infobox caption{padding:0.2em}.mw-parser-output .infobox .infobox-header,.mw-parser-output .infobox .infobox-subheader,.mw-parser-output .infobox .infobox-image,.mw-parser-output .infobox .infobox-full-data,.mw-parser-output .infobox .infobox-below{text-align:center}.mw-parser-output .infobox .infobox-navbar{text-align:right}body.skin-minerva .mw-parser-output .infobox-header,body.skin-minerva .mw-parser-output .infobox-subheader,body.skin-minerva .mw-parser-output .infobox-above,body.skin-minerva .mw-parser-output .infobox-title,body.skin-minerva .mw-parser-output .infobox-image,body.skin-minerva .mw-parser-output .infobox-full-data,body.skin-minerva .mw-parser-output .infobox-below{text-align:center}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}


/* end   https://pt.wikipedia.org/ */
</style></span><table class="infobox vevent" id="mwAw"><tbody><tr><th colspan="2" class="infobox-above summary" style=""><span>R.e.C.</span></th></tr><tr><td colspan="2" class="infobox-image logo"><span typeof="mw:File"><img src="./_assets_/0c70a452f799bfe840676ee341124611/C.a.R._logo.png" decoding="async" data-file-width="245" data-file-height="239" data-file-type="bitmap" height="137" width="140" class="mw-file-element" loading="lazy"></span></td></tr><tr><th scope="row" class="infobox-label" style="white-space:nowrap;"><a rel="mw:WikiLink" href="Programador" title="Programador">Autores</a></th><td class="infobox-data">Eric Hakenholz,<br>Rene Grothmann</td></tr><tr><th scope="row" class="infobox-label" style="white-space:nowrap;"><a rel="mw:WikiLink" href="Sistema_operacional" title="Sistema operacional" class="mw-redirect">Sistema<br>operacional</a></th><td class="infobox-data"><a rel="mw:WikiLink" href="Multiplataforma" title="Multiplataforma">Multiplataforma</a><span typeof="mw:DisplaySpace">&nbsp;</span>: <a rel="mw:WikiLink" href="Linux" title="Linux">Linux</a>, <a rel="mw:WikiLink" href="Microsoft_Windows" title="Microsoft Windows">Microsoft Windows</a>, <a rel="mw:WikiLink" href="Mac_OS_X" title="Mac OS X" class="mw-redirect">Mac OS X</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space:nowrap;"><a rel="mw:WikiLink" href="Categorias_de_software#Abordagens_de_categorização" title="Categorias de software">Tipo</a></th><td class="infobox-data">Software de Geometria dinâmica</td></tr><tr><th scope="row" class="infobox-label" style="white-space:nowrap;"><a rel="mw:WikiLink" href="Licen%C3%A7a_de_software" title="Licença de software">Licença</a></th><td class="infobox-data"><a rel="mw:WikiLink" href="Licen%C3%A7a_P%C3%BAblica_Geral_GNU" title="Licença Pública Geral GNU" class="mw-redirect">Licença Pública Geral GNU</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space:nowrap;">Website</th><td class="infobox-data"><span class="url"><a rel="mw:ExtLink nofollow" href="http://zirkel.sourceforge.net" class="external text">zirkel<wbr>.sourceforge<wbr>.net</a></span> <br><span class="url"><a rel="mw:ExtLink nofollow" href="https://sourceforge.net/projects/zirkel/" class="external text">sourceforge<wbr>.net<wbr>/projects<wbr>/zirkel<wbr>/</a></span></td></tr></tbody></table>

<p id="mwBA"><b id="mwBQ">R.e.C.</b>  <b id="mwBg">Régua e Compasso</b> (também conhecido como <b id="mwBw">C.a.R.</b>, <i id="mwCA">Compass and Ruler</i> em Inglês, ou <b id="mwCQ">Z.u.L.</b>, <i id="mwCg">Zirkel und Lineal</i> em Alemão) é um software de geometria dinâmica <a rel="mw:WikiLink" href="Software_livre" title="Software livre" id="mwCw">livre</a> e de <a rel="mw:WikiLink" href="C%C3%B3digo_aberto" title="Código aberto" id="mwDA">código aberto</a> que pode realizar <a rel="mw:WikiLink" href="Lista_de_constru%C3%A7%C3%B5es_do_desenho_geom%C3%A9trico" title="Lista de construções do desenho geométrico" id="mwDQ">construções</a> geométricas em geometrias <a rel="mw:WikiLink" href="Geometria_euclidiana" title="Geometria euclidiana" id="mwDg">euclidianas</a> e <a rel="mw:WikiLink" href="Geometria_n%C3%A3o_euclidiana" title="Geometria não euclidiana" id="mwDw">não euclidianas</a>.</p>

<p id="mwEA">O software é baseado na linguagem de programação <a rel="mw:WikiLink" href="Java_(linguagem_de_programa%C3%A7%C3%A3o)" title="Java (linguagem de programação)" id="mwEQ">Java</a>. Foi escrito por R. Grothmann, da <a rel="mw:WikiLink" href="Universidade_Cat%C3%B3lica_de_Eichst%C3%A4tt-Ingolstadt" title="Universidade Católica de Eichstätt-Ingolstadt" id="mwEg">Universidade Católica de Eichstätt-Ingolstadt</a> em 1996. Antes desta versão, o autor já havia escrito outros programas de geometria para diferentes plataformas, como o <a rel="mw:WikiLink" href="Atari" title="Atari" id="mwEw">Atari</a> ST ou o <a rel="mw:WikiLink" href="GEM" title="GEM" class="mw-redirect" id="mwFA">GEM</a>, chegando a escrever uma versão para o sistema <a rel="mw:WikiLink" href="Windows" title="Windows" class="mw-redirect" id="mwFQ">Windows</a> em <a rel="mw:WikiLink" href="C%2B%2B" title="C++" id="mwFg">C++</a>.<sup class="mw-ref reference" id="cite_ref-1" rel="dc:references" typeof="mw:Extension/ref"><a href="#cite_note-1" id="mwFw"><span class="mw-reflink-text" id="mwGA"><span class="cite-bracket" id="mwGQ">[</span>1<span class="cite-bracket" id="mwGg">]</span></span></a></sup></p>

</section><section data-mw-section-id="1" id="mwGw" aria-labelledby="Ver_também"><div class="mw-heading mw-heading2"><h2 id="Ver_também"><span id="Ver_tamb.C3.A9m" typeof="mw:FallbackId"></span>Ver também</h2></div>



<ul id="mwHQ"><li id="mwHg"><a rel="mw:WikiLink" href="GeoGebra" title="GeoGebra" id="mwHw">GeoGebra</a></li>
<li id="mwIA"><a rel="mw:WikiLink" href="CaRMetal" title="CaRMetal" id="mwIQ">CaRMetal</a></li>
<li id="mwIg"><a rel="mw:WikiLink" href="Kig" title="Kig" id="mwIw">Kig</a></li>
<li id="mwJA"><a rel="mw:WikiLink" href="Constru%C3%A7%C3%B5es_com_r%C3%A9gua_e_compasso" title="Construções com régua e compasso" class="mw-redirect" id="mwJQ">Construções com régua e compasso</a></li></ul>

</section><section data-mw-section-id="2" id="mwJg" aria-labelledby="Referências"><div class="mw-heading mw-heading2"><h2 id="Referências"><span id="Refer.C3.AAncias" typeof="mw:FallbackId"></span>Referências</h2></div>
<div class="reflist " style=" list-style-type: decimal;" typeof="mw:Transclusion" id="mwJw">
<div class="mw-references-wrap" typeof="mw:Extension/references" id="mwKA"><ol class="mw-references references" id="mwKQ"><li id="cite_note-1" data-mw-footnote-number="1"><span class="mw-cite-backlink" id="mwKg"><a href="#cite_ref-1" rel="mw:referencedBy" id="mwKw"><span class="mw-linkback-text" id="mwLA">↑</span></a></span> <span id="mw-reference-text-cite_note-1" class="mw-reference-text reference-text"><cite class="citation web" typeof="mw:Transclusion" id="mwLQ">R. Grothmann. <a rel="mw:ExtLink nofollow" href="http://compute.ku-eichstaett.de/MGF/wikis/caruser/doku.php?id=history" class="external text" id="mwLg">«About C.a.R.»</a> (em inglês)<span class="reference-accessdate" id="mwLw">. Consultado em 9 de Dezembro de 2013</span></cite><span title="ctx_ver=Z39.88-2004&amp;rfr_id=info%3Asid%2Fpt.wikipedia.org%3AR.e.C&amp;rft.au=R.+Grothmann&amp;rft.btitle=About+C.a.R.&amp;rft.genre=unknown&amp;rft_id=http%3A%2F%2Fcompute.ku-eichstaett.de%2FMGF%2Fwikis%2Fcaruser%2Fdoku.php%3Fid%3Dhistory&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook" class="Z3988" id="mwMA"><span style="display:none;" id="mwMQ"><span typeof="mw:Entity" id="mwMg">&nbsp;</span></span></span></span></li>
</ol></div></div>

</section><section data-mw-section-id="3" id="mwNA" aria-labelledby="Ligações_externas"><div class="mw-heading mw-heading2"><h2 id="Ligações_externas"><span id="Liga.C3.A7.C3.B5es_externas" typeof="mw:FallbackId"></span>Ligações externas</h2></div>
<ul id="mwNQ"><li id="mwNg"><a rel="mw:ExtLink nofollow" href="http://zirkel.sourceforge.net/" class="external text" id="mwNw">Página oficial</a></li>
<li id="mwOA"><a rel="mw:ExtLink nofollow" href="http://db-maths.nuxit.net/CaRMetal/index_en.html" class="external text" id="mwOQ">CaRMetal</a><span typeof="mw:DisplaySpace" id="mwOg">&nbsp;</span>? programa que inclui todas as funcionalidades do R.e.C., mas que segue uma abordagem diferente do ponto de vista da interface gráfica.</li>
<li id="mwOw"><a rel="mw:ExtLink nofollow" href="http://www.marcinek.sk/cmich/java/Tut_Index.html" class="external text" id="mwPA">Um tutorial elementar para usar applets Java gerados pelo R.e.C.</a></li>
<li id="mwPQ"><a rel="mw:ExtLink nofollow" href="http://regua-e-compasso.blogspot.com" class="external text" id="mwPg">Página com exercícios sobre o programa</a></li></ul>

<ul typeof="mw:Transclusion" id="mwPw"><li><i>Este artigo foi inicialmente traduzido, total ou parcialmente, do artigo da Wikipédia em <a rel="mw:WikiLink" href="L%C3%ADngua_inglesa" title="Língua inglesa">inglês</a> cujo título é «<a rel="mw:WikiLink/Interwiki" href="https://en.wikipedia.org/wiki/C.a.R." title="en:C.a.R." class="extiw external">C.a.R.</a>», especificamente <span class=""><a rel="mw:ExtLink" href="https://en.wikipedia.org/w/index.php?title=C.a.R.&amp;oldid=576806409" class="external text" data-mw-original-href="http://en.wikipedia.org/w/index.php?title=C.a.R.&amp;oldid=576806409">desta versão</a></span>.</i></li></ul>

<div role="navigation" class="navbox" aria-labelledby="Softwares_de_Geometria" style="padding:3px" typeof="mw:Transclusion" id="mwQA"><style data-mw-deduplicate="TemplateStyles:r71275812" typeof="mw:Extension/templatestyles">
/* start https://pt.wikipedia.org/ */


.mw-parser-output .navbox{box-sizing:border-box;border:1px solid #a2a9b1;width:100%;clear:both;font-size:88%;text-align:center;padding:1px;margin:0em auto 0}.mw-parser-output .navbox .navbox{margin-top:0}.mw-parser-output .navbox+.navbox,.mw-parser-output .navbox+.navbox-styles+.navbox{margin-top:-1px}.mw-parser-output .navbox-inner,.mw-parser-output .navbox-subgroup{width:100%}.mw-parser-output .navbox-group,.mw-parser-output .navbox-title,.mw-parser-output .navbox-abovebelow{padding:0.25em 1em;line-height:1.5em;text-align:center}.mw-parser-output .navbox-group{white-space:nowrap;text-align:right}.mw-parser-output .navbox,.mw-parser-output .navbox-subgroup{background-color:#fdfdfd;color:inherit}.mw-parser-output .navbox-list{line-height:1.5em;border-color:#fdfdfd}.mw-parser-output .navbox-list-with-group{text-align:left;border-left-width:2px;border-left-style:solid}.mw-parser-output tr+tr>.navbox-abovebelow,.mw-parser-output tr+tr>.navbox-group,.mw-parser-output tr+tr>.navbox-image,.mw-parser-output tr+tr>.navbox-list{border-top:2px solid #fdfdfd}.mw-parser-output .navbox-title{background-color:#ccf;color:inherit}.mw-parser-output .navbox-abovebelow,.mw-parser-output .navbox-group,.mw-parser-output .navbox-subgroup .navbox-title{background-color:#ddf;color:inherit}.mw-parser-output .navbox-subgroup .navbox-group,.mw-parser-output .navbox-subgroup .navbox-abovebelow{background-color:#e6e6ff;color:inherit}.mw-parser-output .navbox-even{background-color:#f7f7f7;color:inherit}.mw-parser-output .navbox-odd{background-color:transparent;color:inherit}.mw-parser-output .navbox .hlist td dl,.mw-parser-output .navbox .hlist td ol,.mw-parser-output .navbox .hlist td ul,.mw-parser-output .navbox td.hlist dl,.mw-parser-output .navbox td.hlist ol,.mw-parser-output .navbox td.hlist ul{padding:0.125em 0}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}body.skin--responsive .mw-parser-output .navbox-image img{max-width:none!important}@media print{body.ns-0 .mw-parser-output .navbox{display:none!important}}


/* end   https://pt.wikipedia.org/ */
</style><table class="nowraplinks collapsible collapsed navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Softwares_de_Geometria" style="font-size:114%;margin:0 4em">Softwares de Geometria</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Softwares livres</th><td class="navbox-list navbox-odd" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px;padding:0.25em 0; line-height:1.4em;"><div style="padding:0em 0.25em">
<span style="white-space:nowrap"> <a rel="mw:WikiLink" href="DrGeo" title="DrGeo">DrGeo</a><span typeof="mw:Entity">&nbsp;</span><b>·</b></span> <span style="white-space:nowrap"> <a rel="mw:WikiLink" href="GeoGebra" title="GeoGebra">GeoGebra</a><span typeof="mw:Entity">&nbsp;</span><b>·</b></span> <span style="white-space:nowrap"> <a rel="mw:WikiLink" href="Kig" title="Kig">Kig</a><span typeof="mw:Entity">&nbsp;</span><b>·</b></span> <span style="white-space:nowrap">  <a rel="mw:WikiLink" href="Kseg" title="Kseg">Kseg</a> <span typeof="mw:Entity">&nbsp;</span><b>·</b></span> <span style="white-space:nowrap"> Geonext<span typeof="mw:Entity">&nbsp;</span><b>·</b></span> <span style="white-space:nowrap"> Geomview <span typeof="mw:Entity">&nbsp;</span><b>·</b></span> <span style="white-space:nowrap"> <a rel="mw:WikiLink" href="R.e.C" class="mw-selflink selflink">R.e.C</a> <span typeof="mw:Entity">&nbsp;</span><b>·</b></span> <span style="white-space:nowrap"> <a rel="mw:WikiLink" href="CaRMetal" title="CaRMetal">CaRMetal</a> </span></div></td></tr></tbody></table></div>


<span typeof="mw:Transclusion" id="mwQg"></span>
</section></div><!--htdig_noindex--><div><div class="zim-footer">
    Este artigo é emitido por <a class="external text" title="Última edição em 2025-12-23" href="https://pt.wikipedia.org/wiki/?title=R.e.C&amp;oldid=71414692">Wikipédia</a>. O texto é licenciado sob <a class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.pt">Creative Commons Attribution-Share Alike 4.0</a>. Termos adicionais podem ser aplicados aos arquivos de mídia.
</div>
</div><!--/htdig_noindex--></div>
            </div>
          </main>
        </div>
      </div>
    </div>
     <script src="./_webp_/webpHandler.js"></script>
  

</body></html>