This theory is based on geometry. In the classical theory of geometry one can make angle of 15, 30, 45, 60… up to 360 degree. Such that the deference between the consecutive terms is 15 degree. But now by using this theorem we can make more discrete angles by making 70 degree. Such as 35, 65, 95, etc. by using compass. There is an equation, by using this we can do it.