Pi (π) is an irrational number , meaning it cannot be expressed as the ratio of two integers (a simple fraction). Its decimal representation goes on infinitely without repeating

. Additionally, pi is a transcendental number , which means it is not a root of any polynomial equation with integer coefficients

. In summary:

• Pi is the ratio of a circle's circumference to its diameter.
• It is irrational: its decimal form never ends or repeats.
• It is transcendental: it cannot be the solution to any polynomial equation with integer coefficients.
• Approximations like 22/7 or 355/113 are close but not exact.

This makes pi a unique and fundamental constant in mathematics and science