Boating: Before GPS (and still used as a back-up in case the GPS system goes down), mariners used basic geometric principles to find their location and calculate distance. If you're ever a serious boater, you'll want to know how to use some old mariners' tricks--in case the technology goes down.
Engineers: Engineers use geometry every day, from calculating the angles required for a bridge support, to calculating the precise angle for space shuttle reentry.
Interior designers: There are lots of angles and areas to be calculated when designing a room!
Plumbers: Water cannot flow uphill, at least not without a pump. Therefore, plumbers can calculate the correct angle to ensure a pipe will allow drainage.
Home improvement: Basic geometry can be used for many applications. For instance, the rule of right angled triangles can be used to erect a garden fence. Laying floor tile, mowing the lawn, painting a wall: you'll find yourself calculating area many times as a home owner!