Classical construction of a regular pentagon (i.e. with a compass and straightedge). Made with the free Java software Compass and Ruler (short <a href="https://en.wikipedia.org/wiki/C.a.R." class="extiw" title="w:C.a.R.">C.a.R.</a>).
<a href="//commons.wikimedia.org/w/index.php?title=User:Fropuff&amp;action=edit&amp;redlink=1" class="new" title="User:Fropuff (page does not exist)">User:Fropuff</a>
2006-06-05
<span class="int-own-work" lang="en">Own work</span>