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.
False. Coplanar simply means they are on the same plane. An infinite number of non-parallel lines can be placed on any plane, and an infinite number of parallel lines can also be placed on a plane. If you can make two lines on a plane that cross, then you have proven that coplanar lines do not have to be parallel.