 Hello and welcome to the session. I am Shashi and I am going to help you with the following question. Question says, fill in the blanks. Fourth part is the common point of tangent to a circle. And the circle is called dash. Let us now start with the solution. First of all, let us draw a circle with center O. And AB is a tangent to the circle. And it touches the circle at point P. First of all, let us know that the common point of tangent and the circle is called the point of contact. And the tangent is said to touch the circle at the common point. In this case, P is the point of contact. The tangent is touching the circle at point P. So, P is the point of contact. So, our required answer is the common point of tangent to a circle and the circle is called point of contact. So, we can write the common point of a tangent to a circle and the circle is called point of contact. This is our required answer. This completes the session. Hope you understood the solution. Take care and have a nice day.