Oh, isn't that a lovely question! You see, a point is like a tiny dot on a canvas, and it can only belong to one plane at a time. Just like how each tree in a forest has its own special place, each point has its own unique spot in space. Remember, every little point is important and has its own special role to play.
Two straight lines in the same plane can't possibly have more than one point in common, unless they are both the same line. If they're parallel, they have no common points. If they're not parallel, then have exactly one common point. If they're the same line, then every point on one line is also on the other one.
point I believe the word you're looking for is "intersection". Two non-parallel lines that lie in the same plane will have one point in common where they cross, and that point is the intersection.
Not necessarily. Coplanar means that points lie on the same plane whereas collinear means that points lie on the same line. Points on a plane do not necessarily lie along the same line.
Yes - if they are straight lines.
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.
yeah
the same line
Identical.
Points that lie on the same plane are coplanar. Generally, three points have to be coplanar, but more than that can be in any plane.
a truthfull point
non-coplanar points are points that does not lie on the same plane... by:GRAETIA VILLANUEVA...
Coplanar.
they lie in the same plane
An intersection
collinear plane
In general, yes. However, if there is a drawing that goes along with this question, and it shows more information about 'c' that you have not bothered to share, then it's certainly possible that point 'c' may not lie in the same plane as 'xy'.
co-planar