http://www.multimediaexpo.cz/mmecz/index.php?action=history&feed=atom&title=Obvod_%28geometrie%29 2026-05-25T03:50:04Z Historie editací této stránky MediaWiki 1.16.5 http://www.multimediaexpo.cz/mmecz/index.php?title=Obvod_(geometrie)&diff=3058222&oldid=prev 2025-07-26T17:28:30Z

<p>+ Aktualizace</p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Starší verze</td> <td colspan='2' style="background-color: white; color:black;">Verze z 26. 7. 2025, 17:28</td> </tr><tr><td colspan="2" class="diff-lineno">Řádka 1:</td> <td colspan="2" class="diff-lineno">Řádka 1:</td></tr> <tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">{{Wikipedia</del>-<del class="diffchange diffchange-inline">cs</del>|<del class="diffchange diffchange-inline">Obvod </del>(geometrie)|<del class="diffchange diffchange-inline">700</del>}}</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">'''Obvod''' je nejen hraniční [[křivka]] rovinného útvaru, ale i její [[délka]].</ins></div></td></tr> <tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline"> &nbsp; </del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>&#160;</div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">Základní jednotka SI: m [metr]</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>&#160;</div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">== Obvody některých útvarů ==</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">* [[Čtverec]] – čtyřnásobek délky strany</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">:''o'' = 4 · ''a''</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>&#160;</div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">* [[Obdélník]] a [[rovnoběžník]] – dvojnásobek první a druhé strany</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">:''o'' = 2 · ( ''a'' + ''b'' )</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">[[Soubor:Pi</ins>-<ins class="diffchange diffchange-inline">unrolled-720.gif</ins>|<ins class="diffchange diffchange-inline">thumb|250px|Animovaná ukázka určení obvodu kruhu&amp;nbsp;o&amp;nbsp;průměru &lt;big&gt;\(d = 1\)&lt;/big&gt;.]]</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">* [[Mnohoúhelník]] – součet [[Délka|délek]] všech jeho stran.</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">:''o'' = ''a'' + ''b'' + ''c'' + …</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">kde ''a'', ''b'', ''c'', … jsou strany mnohoúhelníku.</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>&#160;</div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">* [[Kruh </ins>(geometrie)|<ins class="diffchange diffchange-inline">Kruh]] – délka jeho ''hraniční'' [[kružnice]].</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>&#160;</div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">:''o'' = 2 · ''π'' · ''r'' = ''π'' · ''d''</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">kde ''r'' je [[poloměr]] kruhu a ''d'' je [[průměr (geometrie)|průměr]] kruhu.</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>&#160;</div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">* [[Elipsa]]</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">** lze určit pouze pomocí ''přibližných'' vzorců</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">&lt;div align=&quot;center&quot;&gt;&lt;big&gt;\(o \approx \pi \left[{{3\over 2</ins>}<ins class="diffchange diffchange-inline">\left(a+b\right) - \sqrt{ab</ins>} <ins class="diffchange diffchange-inline">}\right]\,,\)&lt;/big&gt;&lt;/div&gt;</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">&lt;div align=&quot;center&quot;&gt;&lt;big&gt;\(o \approx {\pi\over 2} \left[{a + b + \sqrt{2\left(a^2+b^2\right)}}\right]\)&lt;/big&gt;&lt;/div&gt;</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">:* nebo částečným součtem [[nekonečná řada|nekonečné řady]]</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">&lt;div align=&quot;center&quot;&gt;&lt;big&gt;\(o = 2\pi a \left[{1 - \left({1\over 2}\right)^2\varepsilon^2 - \left({1\cdot 3\over 2\cdot 4}\right)^2{\varepsilon^4\over 3} - \left({1\cdot 3\cdot 5\over 2\cdot 4\cdot 6}\right)^2{\varepsilon^6\over5} - \dots}\right]\,.\)&lt;/big&gt;&lt;/div&gt;</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>&#160;</div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">==Související články==</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">* [[Perimetr]]</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">* [[Délka]]</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>&#160;</div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>&#160;</div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">{{Článek z Wikipedie}}</ins></div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Kategorie:Geometrie]]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Kategorie:Geometrie]]</div></td></tr> </table>

Sysop http://www.multimediaexpo.cz/mmecz/index.php?title=Obvod_(geometrie)&diff=221931&oldid=prev 2013-07-14T12:40:06Z

<p>1 revizi</p> <table style="background-color: white; color:black;"> <tr valign='top'> <td colspan='1' style="background-color: white; color:black;">← Starší verze</td> <td colspan='1' style="background-color: white; color:black;">Verze z 14. 7. 2013, 12:40</td> </tr></table>

Sysop http://www.multimediaexpo.cz/mmecz/index.php?title=Obvod_(geometrie)&diff=221930&oldid=prev 2012-10-25T10:49:00Z

<p>1 revizi</p> <p><b>Nová stránka</b></p><div>{{Wikipedia-cs|Obvod (geometrie)|700}}<br /> <br /> [[Kategorie:Geometrie]]</div>

Sysop