Line Perpendicular to a Plane

Photograph by: Cece

This is an image of golfer putting on a green during a practice round of the US Open in 2011. The flag stick, which is highlighted in purple, is part of a line that is perpendicular to the plane of the green, which is outlined in red. A perpendicular line is a line that intersects with another geometric object to form a right angle. The right angle in this image is shown in blue. This image could be used by the marketing/advertising industry to advertise the US Open or the golfer in the image. Callaway Golf could use this image for advertising because the golfer is sponsored by them as well as Adidas.