1. Only one plane can pass through three noncollinear points.
FALSE- noncollinear points are points that do not all share the same line or plane, so it would take two planes to pass through all 3 noncollinear points. In a plane, if two lines are perpendicular to the same line then they are parrallel only if they are in the same plane and also not the identical lines
the x y z axis are all perp to eachother
