Thanks Brian, The page you listed is a very interesting read. I really enjoyed it (didn't understand all of it) but enjoyed the read. I don't need to be this close and accurate. A few feet this way or that is fine. I just wanted to be close. Thanks to everyone who sent me suggestions. Bob Smith, 1/2 of Team Petite Elite Brian Cluff wrote: > Robert & Linda Smith wrote: > >> For instance: Point 1 is N34 36.346 W112 29.115, Point 2 is N34 >> 36.652 W112 27.942, Point 3 is N34 36.224 W112 28.532 I am looking >> for the coordinates at the dead center of these 3 points. > > > Hmmm, I guess the first thing you would want to do is decided "what is > the center of a triangle... there is more than one way to calculate > it, and it moved depending on how you do it. > > http://jwilson.coe.uga.edu/EMT668/EMT668.Student.Folders/Meredith/Meredith/Assignment.4/Ctrs.Tri.html > > > Then after you have looked over that page, you will have to decide > just how accurate you would like your center to be. > If you are talking about points that are many miles apart, you will > have to take into account the curvature of the earth, and believe > me... over just a few miles you can get a HUGE error if you don't take > it into account. > > All I can say is, good luck... the formula to do it right is going to > probably fill the better part of a sheet of paper. It would > definitely make for a puzzle cache that almost nobody would find. > Brian Cluff > Team Snaptek > ____________________________________________________________ > Az-Geocaching mailing list listserv@azgeocaching.com > To edit your setting, subscribe or unsubscribe visit: > http://listserv.azgeocaching.com/mailman/listinfo/az-geocaching > > Arizona's Geocaching Resource > http://www.azgeocaching.com >