Just take a look at a US dollar bill and you'll find many applications of coordinated geometry on it.
http://wiki.answers.com/Q/What_are_the_application...

Geometry is not generally covered in grades kindergarten through eight, but children are introduced to shapes and spaces in a variety of ways. In initial school activities, kindergarten
http://www.ehow.com/info_8698204_geometryusedrea...

hustling at pool also requires geometry. working in field artillery finds it useful too. As does navigation by maps (especially in olden days)
http://answers.yahoo.com/question/index?qid=200801...

One of the cool applications of convex hulls is to the computation/construction of convex relaxations. Roughly speaking, this is a way to find the 'closest' convex problem to a nonconvex
http://www.quora.com/ConvexOptimization/Whatare...
