Pi Day 2025 Theme. On this page you'll find fun, geeky, information about pi, the magical math constant that is used (among other things) to measure the area and circumference of a circle. In mathematics and physics, pi, approximately 3.14, is a fundamental concept that represents the ratio of a.

The international day of mathematics (i.d.m.) on march 14 is a worldwide celebration that happens each year where all countries will participate (including students and the general. The significance of π extends beyond its mathematical.