5
its 4
Not sure about complanar. Coplanar lines can be collinear but need not be.
A point or, if the lines are also collinear, the line(s).
Lines or points lying on the same plane
They are coplanar. ANY 2 lines would be coplanar, however a third line can be outside of the plane. just like 3 points will designate a plane and a triangle
Two coplanar lines that never intersect are called called parallel lines.
Not sure about complanar. Coplanar lines can be collinear but need not be.
They are lines or points that lie on the same plane. Remember 3 or more points are collinear if they lie on the same line. IF those lines lie on the same plane they are coplanar.
only 1 lines can contain 3 collinear points. Maybe you mean coplanar?
3
3
There are 13*12/2 = 78 lines.
A point or, if the lines are also collinear, the line(s).
# 1
Any three non-collinear points will define a single plane. A plane is composed of an infinite number of distinct lines.
4*3/2 = 6 lines.
As long as at least two of them are different points, exactly one line.
Points and lines on the same plane are coplanar.