Hey, Pfranz: This Internet is really something. Just for the hell of it, I searched for and found
a way to construct an angle of 24 degrees. An equilateral triangle has 120 debrees. A regular
pentagon has an angle of 72 degrees. The difference is 48 degrees. Half of that is 24 degrees.
I found a site to construct a regular pentagon. It is fairly short, but I haven't mastered it yet.
http://mathforum.org/dr.math/faq/formulas/faq.regpoly.html#floor

Not quite enough to pat myself on the back, and claim I'm a geek. Bill