What is the definition of pi?
- A special ratio that can be used to describe the proportions of everything from nature's smallest building blocks, such as atoms, to the most advanced patterns in the universe, such as unimaginably large celestial bodies.
- The distance from the center of a circle to a point on the circle.
- The linear distance around the edge of a closed curve or circular object.
- the ratio of a circle's circumference to its diameter