Introduction: Pi is an incredibly essential number in our world, without it we would be missing countless things that have become necessary in our daily lives. We would not have the knowledge we have now about celestial paths in our solar system and beyond. For ordinary people, pi is the circumference of a circle divided by its diameter, but there is much more behind this number. It is an irrational and transcendental number that has aroused the interest of mathematicians. It is not possible to say precisely who first became aware of this number. There are writings from 35,000 years ago that reveal knowledge of a concept closely linked to pi. According to Beckmann in his book A History of Pi, to understand how in 2000 BC the concept of pi and its meaning came more or less clearly to human minds “we have to go back to the Stone Age and beyond, and into the realm of speculation (Beckmann, 1971). Pi is the circumference of a circle divided by its diameter. Point 1: Ancient HistoryAncient civilizations were beginning to realize that there was actually a fixed ratio between the circumference of a circle and its diameter. There are some indications that the architects of the pyramids were familiar with the concept of pi, it is believed that this is due to the fact that the dimensions of these pyramids give us a value equal to two times pi. The Egyptians did not have the exact value but perhaps an approximate value of pi of 3. According to the "A Brief History of Pi" section of Exploratorium, there is a papyrus depicting the Egyptian attempt to calculate pi. This papyrus is known as the Rhind Papyrus (c. 1650 BC), which contains how the Egyptians used a formula to approximate a value of 3.1605 for pi. As reported by Allen in his art...... middle of paper... ...icated and formed “on a continued fraction for the tanx function”. (Constant, 2014). Later, in 1794, the mathematician Legendre proved that the square pi is also irrational. It was not until 1882 that the German mathematician Ferdinand von Lindemann demonstrated the transcendence of pi. According to Wolfram MathWorld, a transcendent number is “a number that is not the root of any integer polynomial, which means it is not an algebraic number of any degree.” Steve Mayer writes in his article "The Transcendence of Pi" that the evidence indicating that Pi is transcendental is not commonly known although it is not difficult. with new ways to represent pi. One of India's greatest mathematicians, Srinivasa Ramanujan, proved the following representation of pi