https://artofproblemsolving.com/wiki/index.php?title=AoPS_Wiki:Problem_of_the_Day/June_19,_2011&feed=atom&action=historyAoPS Wiki:Problem of the Day/June 19, 2011 - Revision history2024-03-29T07:53:09ZRevision history for this page on the wikiMediaWiki 1.31.1https://artofproblemsolving.com/wiki/index.php?title=AoPS_Wiki:Problem_of_the_Day/June_19,_2011&diff=39724&oldid=prevBtilm305: Protected "AoPSWiki:Problem of the Day/June 19, 2011": Problem of the Day ([edit=sysop] (indefinite) [move=sysop] (indefinite))2011-06-19T00:35:11Z<p>Protected "<a href="/wiki/index.php?title=AoPSWiki:Problem_of_the_Day/June_19,_2011&action=edit&redlink=1" class="new" title="AoPSWiki:Problem of the Day/June 19, 2011 (page does not exist)">AoPSWiki:Problem of the Day/June 19, 2011</a>": Problem of the Day ([edit=sysop] (indefinite) [move=sysop] (indefinite))</p>
<table class="diff diff-contentalign-left" data-mw="interface">
<tr class="diff-title" lang="en">
<td colspan="1" style="background-color: #fff; color: #222; text-align: center;">← Older revision</td>
<td colspan="1" style="background-color: #fff; color: #222; text-align: center;">Revision as of 00:35, 19 June 2011</td>
</tr><tr><td colspan="2" class="diff-notice" lang="en"><div class="mw-diff-empty">(No difference)</div>
</td></tr></table>Btilm305https://artofproblemsolving.com/wiki/index.php?title=AoPS_Wiki:Problem_of_the_Day/June_19,_2011&diff=39723&oldid=prevBtilm305: new problem2011-06-19T00:34:57Z<p>new problem</p>
<p><b>New page</b></p><div>I choose a point located in the interior of a plane triangle. After that, I construct line segments from that point to each of the vertices of the triangle. Three new triangles are formed. Prove that at least two of the triangles are obtuse.<noinclude>[[category:Problem of the Day]]</noinclude></div>Btilm305