parallel
No
Yes. If points are on the same side of a line, they are in a half-plane.
Points or lines that lie on the same plane are coplanar.
points that lines in the same plane are coplanor
noncoplaner
Yes, a plane containing 2 points of a line contains the entire line. Let us consider two points on a plane and then draw a line segment joining those two points. Since the points lie on the plane so line segment has to lie completely on that plane too. Now if we extend the line segment indefinitely in both directions we get a line and that line also has to lie on the same plane since some definite part(line segment) of it(line) also lies on the same plane.
No, because a tangent is the line lying on the same plane or it means there are not in the same line.
plane
A plane.
Plane
Yes they are. It's a postulate: In a plane two lines perpendicular to the same line are parallel.
Of course. Any lines in the same plane (if extended far enough) that are not parallel must intersect.