 Hi and welcome to the session. I am Neha and today I am going to help you with the following question. The question says identify all the quadrilaterals that have part A four sides of equal length and part B says four right angles. Now let's see part A first in which we need to find the quadrilaterals that have four sides of equal length. Let's see its solution. Now the quadrilaterals which have four sides of equal length. Let's see this figure. Here we have a rhombus first. Now we know that in a rhombus all the four sides are of equal length. Thus the first quadrilateral with all four sides equal is a rhombus. Now let's see the figure again. Now we have a square. In a square also we know that all the sides are equal. So second quadrilateral with all four sides equal is a square. Now can you make out any other quadrilateral in which all the four sides are equal? No, there is no such quadrilateral. So our answer for this part is a rhombus and a square. Let's see part B now. In part B we need to find out all the quadrilaterals that have four right angles. So the quadrilaterals that have four right angles. Let's see this figure. All right. Let's see a square first. We know that in a square all the angles are right angles. That is it is 90 degrees. Therefore the first quadrilateral that have all four right angles is a square. Now let's see a rectangle. In a rectangle we know that all the angles are right angles. Thus the second quadrilateral will be a rectangle. Thus our solution for this part is a square and a rectangle. With this we finish this session. Hope you must have understood the question. Goodbye, take care and have a nice day.