Most visitors to this site keep a pretty close watch on their system. When a new user account suddenly appears on the system it's no surprise it's a matter of concern and raises more than a few questions. It turns out UpdatusUser is part of the NVIDIA driver package for their graphics cards.
Coplanar Lines. Coplanar Lines are lines which lie on the same plane. Two parallel lines or two intersecting lines always lie in a plane. Thus, two line are coplanar, if and only if they are either parallel or intersecting. Lines in three dimensional space are coplanar, only if they are not skewed lines. Two lines which are neither parallel nor intersecting are called skewed lines.
Definition of Coplanar Lines. Coplanar lines are lines that lie on the same plane. Picture a giant sheet of paper. Whatever lines are drawn on that sheet of paper will be coplanar because they are lying on the same plane, or the same flat surface. Look at this image.