Answer:
Collinear points are two or more points that lie on the same line.
Explanation:
Collinear Points--
Two or more points are said to be collinear if they lie on the same line and if they don't lie on the same line then they are called non-collinear points.
( for example--
In a triangle all the three points do not lie in the same line.
Hence, they are non-collinear points)
( similarly we use the definition of coplanar.
Two or more points are said to be coplanar if they lie on the same plane)