 Hello and welcome to the session. In this session we will discuss a question which says that where the line of reflection symmetry that will tell the pairing figures on to itself. Now let us start with the solution of the given question. Now where we have to draw the line of symmetry for the given figures? Now we know line of symmetry acts as a mirror line such that one part is the reflection of the other part thus a line of symmetry is a line along which a shape may be folded so that both parts of the shape will match. Now let us start with the first part. Now in first part we have a pentagon. Now let us draw its line of symmetry. Now let us label the vertices of this pentagon as A, B, C, D and E. Now our first line of symmetry will be through the vertex A. Now where we can see the two parts are a reflection of each other. Similarly we obtain that the two parts will overlap each other exactly if we fold the figure through vertex B, C, D and E. So given pentagon has five lines of symmetry. Now in second part we have alphabet A. Now if we fold it vertically then the two parts overlap each other exactly. So there is one line. Now let us start with the third part a triangle. But in three ways so that one part of triangle is reflection of the other part. Let us name the vertices of this triangle as A, B and C. Now the first fold is through vertex A and here we have drawn a line through vertex A and we have two triangles and we can see that triangle A, B, D is reflection of triangle A, C, D. The second fold will be through vertex B and third will be through vertex C. So the given triangle has three lines of symmetry. Now let us start with the fourth part. Now in fourth part we are given a parallelogram. Now let us see whether it has symmetry or not. Now when we fold it from center we have two correlators formed and none is the reflection of other. The two parts do not overlap each other exactly. If we fold it from center or diagonally then also both parts are different. The given parallelogram does not have a line of symmetry. So this is the solution of the given question and that is for this session. Hope you all have enjoyed this session.