Comments on: Geocaching Puzzle Caches: How to find the Orthocenter of a Triangle http://blog.expertgps.com/blog/2009/03/geocaching-puzzle-caches-how-to-find-the-orthocenter-of-a-triangle/ Expert answers to your questions about GPS, Mapping, GIS, and CAD Wed, 01 Sep 2010 14:38:23 -0400 http://wordpress.org/?v=2.8.4 hourly 1 By: Anthony http://blog.expertgps.com/blog/2009/03/geocaching-puzzle-caches-how-to-find-the-orthocenter-of-a-triangle/comment-page-1/#comment-101 Anthony Mon, 10 Aug 2009 19:55:47 +0000 http://blog.expertgps.com/blog/?p=220#comment-101 I'd like to set this up in my area, but to implement it, doesn't it have to be worked in reverse? In other words, hide the cache, get the coordinates, and then find a way to make 3 waypoints forming a triangle, with the orthocenter being the coordinates of the cache? To do so in reverse of that would be more difficult I would think, getting 3 waypoints, and then projecting lines to get the orthocenter, and then hide the cache at the center. But what if the orthocenter is not a suitable location for the cache? It would be near impossible to manipulate the triangle so that the orthocenter would be the coordinates you want. So I guess the main question here is, can this be done in reverse? Generate 3 waypoints based on one set of coordinates in the middle? I’d like to set this up in my area, but to implement it, doesn’t it have to be worked in reverse? In other words, hide the cache, get the coordinates, and then find a way to make 3 waypoints forming a triangle, with the orthocenter being the coordinates of the cache?

To do so in reverse of that would be more difficult I would think, getting 3 waypoints, and then projecting lines to get the orthocenter, and then hide the cache at the center. But what if the orthocenter is not a suitable location for the cache? It would be near impossible to manipulate the triangle so that the orthocenter would be the coordinates you want.

So I guess the main question here is, can this be done in reverse? Generate 3 waypoints based on one set of coordinates in the middle?

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