What is high altitude? And How does altitude sickness work?
Watch dangerous mountain climbing
You need to find a location for a hospital that is located equal distance from three main areas of town. OR you need to find the best place to meet up with our friends so that every one travels and equal distance. How do you use angle bisectors to do this?
Read more here ... http://www.mathopenref.com/trianglecenters.html
Hospital Locator - http://illuminations.nctm.org/LessonDetail.aspx?id=L661
Google Maps Meet up meeting spot locator - http://www.technologyintegrationineducation.com/profiles/blogs/geogebra-a-christmas-story
Orthocenter Patty Paper
Geometry and Side Looking airborne radar