3 or more points are colinear when they all fall on the same line on the same plane.
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A set of 3 points will always be coplanar, but will only sometimes be collinear. Collinear points are always coplanar as well.
There are 91 lines.
If the points are collinear, the number of possible planes is infinite. If the points are not collinear, the number of possible planes is ' 1 '.
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?