Question

if three points are collinear, then they are coplanar

Answer 1

true

Answer 2

Thats true

Answer 3

Any three points are always coplanar.

Answer 4

oh thank you!

Answer 5

You can always find a plane which completely contains your line. If you draw a line on paper, the line is in the plane of the paper (more or less if you ignore the thickness). This means they are coplanar as well. Even if you have a line traveling through 3 dimensions it can still be contained by a plane.