Arc

In geometry, an arc (symbol: ⌒) is a segment of a curve, or a segment of the circumference of a circle. In Design, an arc adds dimension to the space interrupting the cold straight likes of a square room. Take a look at the corporate entrance before and after.

(Before)

(design drawings - SketchUp)

 (after)

The space is enhanced with the added ceiling feature over the reception desk. This design element adds dimension increasing the warmth of the space and creating a welcoming environment.