Question

Give an example from your classroom of 3 collinear points

Answer 1

Collinear points are points lying on the same straight line, i.e. a straight line can always be drawn to join these points.

Considering the classroom:
If three students are sitting in the same row, these students represent 3 collinear points.
If three students are sitting in the same column, these students represent 3 collinear points