>I found a site to construct a regular pentagon. It is fairly short, but I haven't mastered it yet.

Albrecht Durer in his book Anderweysung der messung mit der zirckel und richtscheyt in Linien ebnen und gantzen corporen durch Albrecht Durer zusamen getzogen und zu nutz aller kunstliebhabenden mit zugehorigen figuren in truck gebracht im jar MDXXV presented very simple and elegant way how to form a regular pentagon only with a ruler and one base of a circle (hope it means what i wanted to say ). i've read that the construction is not perfect but for practical goals - good enough.