 Hi and welcome to our session. Let us discuss the polling question. The question says, rewrite each of the polling statements in the form p if and only if q. Given statement is, if a correlator is equi-angular then it is a rectangle and if a correlator is a rectangle then it is a equi-angular. Let's now begin with the solution. We will first write the component statement of R. Component statements of R are a correlator is equi-angular, a correlator is a rectangle. The statement R in the form can only if q a correlator equi-angular if and only if it is a rectangle. This is our required answer. So this completes the session. Bye and take care.