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Decision Points was created on 2010-11-09.
Points cannot be parallel to other points. A straight line joining two points is parallel to a straight line joining another pair of points if the gradient (slope) of the two lines is the same.
Yes, two points are always collinear. You can draw a line through any two points.
No, two points define a line. It takes three points to define a plane.
It is a line segment.