 Hi and welcome to the session. I am Neha and today I am going to explain the following question to you. The question says, explain how a square is a quadrilateral, a parallelogram, a rhombus and a rectangle. Let's see first part first. That is, we need to show how a square is a quadrilateral. So let's see its solution. Let's see the figure of a square. Alright, here we have a square. And now recall what is a quadrilateral. A four sided polygon is called a quadrilateral. If we see a square, then a square is also a four sided polygon. That means a square is also a quadrilateral. Therefore our answer for first part is, a square is four sided so it is a quadrilateral. Now let's see the solution for part V that is second part. Now here we need to show that a square is a parallelogram. Let's see this one now. Let's recall what is a parallelogram. A quadrilateral with each pair of opposite sides is called a parallelogram. That is square, in a square also opposite sides are parallel, that is a b is parallel to dc and a d is parallel to bc. Thus we can say that a square is a parallelogram. So our answer for second part is, a square has its opposite sides so it is a parallelogram. Now let's see third part. In this part we need to show that a square is a rhombus. Do you remember what is a rhombus? Alright, let me tell you. A parallelogram with sides of equal length is called a rhombus. Now if we look at that a square, then we know that all the sides of a square are equal. And we have already proved in second part that the square is a parallelogram. Thus we can say that a square is a rhombus. So our answer for third part is, a square is a parallelogram with all sides equal so it is a rhombus. Let's see the fourth part. Now what we need to show in fourth part? We need to show that a square is a rectangle. Let's recall the definition of rectangle. A parallelogram with a right angle is called a rectangle. Now in a square we know that all the angles are right angles. That is they are 90 degrees each. And we have already proved in second part that a square is a parallelogram. Thus we can say that a square is a rectangle. So our answer for the fourth part will be, a square is a parallelogram with each angle, a right angle so it is a rectangle. So with this we finish this session. Hope you must have understood the question. Goodbye, take care and have a nice day.