 Hello and welcome to the session. In this session we discussed the following question which says how many lines can be drawn passing through 3 collinear points. The second part of the question says how many line segments do 3 collinear points P, Q, R determine named then. Before we move on to the solution for this question let us first define the collinear points 3 or more points in a plane that to be collinear if they all on the same line. This is the key idea to be used in this question. Move on to the solution for this question now. The first part of the question says how many lines can be drawn passing through 3 collinear points. So given 3 collinear points P, Q, R we see that we can draw only one line that is L. So we say only one line can be drawn passing through 3 collinear points. Now let's see the second part of the question which says how many line segments do 3 collinear points P, Q, R determine named then. So we are given 3 collinear points P, Q, R. We have to find out how many line segments do they determine and we have to also name the line segments thus formed. So as you can see we get 3 line segments which are P, Q, R and P, R. So from the given 3 collinear points P, Q, R we get 3 line segments P, Q, Q, R and P, R. So this completes our session. Hope you have understood the solution of this question.